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[Tutorial]Root, Unlock, Recovery and flashing a Custom ROM

Just a quick step by step tutorial to get a Custom ROM working on your One S.
Step 1: Unlock
Go on http://www.htcdev.com and create yourself an account on HTCDEV.
Download These Fastboot Files
Make a new folder on your C:/ drive called fastboot.
Extract The Zip downloaded in step 2 to the new folder
Go Here http://www.htcdev.com/bootloader/ and select "All Other Supported Models" and "then begin unlock bootloader"
Yes, Tick both Boxes, Proceed
Skip up to step 8 as we have all we need for the first 7 steps
Power off your phone by holding the power button down for 10 seconds
Power your phone on by holding power and volume down
Highlight Fastboot With Volume+or- then press Power
Plug your phone into your PC and open a Command Prompt.
(windows XP - Click Start > Run > type CMD in box then press OK
(Windows 7 - Click Start > type CMD in search box then press Enter)
Change directory to your folder where we put fastboot files cd c:\fastboot
Type this into your command prompt window fastboot oem get_identifier_token
Select & copy the text as per step 9 on the HTCDev website
Paste your identifier token into the box at the bottom and submit
You Will Very Shortly Receive an email from HTCDev with a link to the second part of the instructions and your "Unlock_code.bin" attached
Download the "Unlock_code.bin" from the email and save it to the same folder that we extracted fastboot files to in step 2
Type this into your command prompt window fastboot flash unlocktoken Unlock_code.bin
The Display Will change on your phone, press Vol + to accept and power to confirm.
Thanks to bagofcrap24 for this part!
Step 2: Recovery
Download the Android SDK
Download the Interim CWM Touch Recovery of Paul or Official CWM of koush (HTC One S)
(Thanks Paul/koush for the Recovery!)
Place the CWM File where the fastboot.exe is (Downloaded with the SDK)
Now open the cmd and navigate to the folder where the CWM File is located
Now type:
fastboot flash recovery name_of_the_recovery.img
For Paul's:
fastboot flash recovery r2-modaco-recovery-clockwork-touch-ville.img
Step 3: Root
Make sure you are on the stock kernel!
Now root your phone with SuperSU by Chainfire, thanks a lot!
Download SuperSU from the end of the thread
Flash it with the Recovery:
Power off your device and then hold the VOL DOWN + Power to boot into the Bootloader
Navigate with VOL and Power to Recovery
Now flash the .zip:
- install zip from sdcard
- choose zip from sdcard
- select the CWN-SuperSU-v0.87.zip file and flash it
- Reboot now
Now you are able to flash any Custom ROM.
Credits:
Paul for the Recovery: http://forum.xda-developers.com/showthread.php?t=1579584
Chainfire for SuperSU: http://forum.xda-developers.com/showthread.php?t=1538053
Video-Tutorial by Flow-Wolf (thanks buddy):
Bootloader Unlock:
Recovery Installation:
Root:
Custom ROM Installation:
If this helped you, make sure to thank me and to donate to Paul, Chainfire, koush or/and Flow Wolf!

Thanks dude
But htcdevs bootloader unlock is down atm

Really? Try again, for me the website is working.
Anyway, instead of the HTC way you could just wait for a S-OFF tool

The Site is working fine
But when u try to click "Begin unlock Bootloader" nothing happens.
I know, i should wait for a s-off tool.. but dude.. i need my root

The HTC method is good as well
Android without root is nothing..

i think the website is having problems, i have one S connected via usb with debuggins system, i open up the website and choose "All Other Supported Models" , I click begin and nothing, completely nothing happens :/

Just wait some hours

Try with internet explorer (iiik) for me it didnt work with Chrome!

Thanks for this thread showing people the way to go.

alright, just to clarify on macs use Firefox , on chrome and safari htcdev DOES NOT WORK

stickied...

Is there no alternative to the htc-method (htcdev.com) yet?

not yet

But don't be afraid of htcdev, you don't loose the whole warranty
HTC One X with tapatalk 2

Thx for replies! What does "not whole warranty" mean? For which cases will it exist, for which not?

kyuubi_ac said:
Thx for replies! What does "not whole warranty" mean? For which cases will it exist, for which not?
Click to expand...
Click to collapse
Can somebody demystify this?
What's the deal?

Does anyone know if this works on TMO in the states I know the phone hasn't been released yet bit I'm not to sure if the specks are the same.
Sent from Samsung Galaxy S II

kyuubi_ac said:
Thx for replies! What does "not whole warranty" mean? For which cases will it exist, for which not?
Click to expand...
Click to collapse
I think they will employ the same policy as before. In the past, it was often said that even roted / S-OFFed / SuperCID modded devices received service with no problems when it was very obvious that the problem was hardware related (screen dead, etc.)
What kind of defects they will consider "software/rooing related" is anybodys guess and could only be clarified by emailing the HTC support for your country I assume.

Ah alright. I mean, the most probable case for needing help of the htc support is any hardware related problem since software related problems can be solved on oneselfs own. But I already assume that they are quite good at relating hardware issues to the root (OC etc..)

Having some issue with the CWM right here:
I'm trying to get to the "Install zip from sdcard option", but shortly after pressing the voldown once to highlight that option, CWM kind of resets (screen goes black for a second and I'm back at option 1 ("reboot system now").
Unlock went fine and flashing CWM was not problem either - although I used the r2 from the modaco website.
And I am not sure about the kernel. Anyway to make sure I have the stock one?
(It's a HTC Dev Device)
Thanks for help in advance!
---------- Post added at 01:27 PM ---------- Previous post was at 01:22 PM ----------
haha, okay, simply touching the option does the trick. seems like only the vol rocker is not "supported" ;D sorry

[Q] ok i need help pls

hi all
im living in lebanon and i have htc sensation middle east version
android 2.3.4 with sense 3
software number 1.50.415.1
is that the latest update for my phone ? coz i saw alot ppl got update and when im checking for update i get no update available
so my Quetion is that normal or something goes wrong ?
(someone told me to change CID to 15) if thats true how to do so?.
10x in advance

speechless said:
hi all
im living in lebanon and i have htc sensation middle east version
android 2.3.4 with sense 3
software number 1.50.415.1
is that the latest update for my phone ? coz i saw alot ppl got update and when im checking for update i get no update available
so my Quetion is that normal or something goes wrong ?
(someone told me to change CID to 15) if thats true how to do so?.
10x in advance
Click to expand...
Click to collapse
I guess your latest update (assuming you have an unbranded phone) should be Android v2.3.5 & Sense v3.5/3.6 unless ICS update has released already.
If your phone is branded, you will need to contact your operator to know about the software updates for your phone.
Anyway, to check for the latest update, go to Settings>About Phone>Software Updates>Check now.
If you really can't wait for an update, you can S-Off your phone, flash recovery of your choice, flash appropriate firmware & then apply a stock/custom ROM. Here is a guide for the same.

so what can i do in this case if my phone unbranded?

speechless said:
so what can i do in this case if my phone unbranded?
Click to expand...
Click to collapse
As I said check for the update from settings. If it says no updates found, try switching off and rebooting your phone & then checking again.
If it again says no updates found & if you really want new software, then you can follow the last suggestion in my previous post. Note that the last option can (and in some cases, will) void your warranty, especially if not done properly.

kgs1992 said:
As I said check for the update from settings. If it says no updates found, try switching off and rebooting your phone & then checking again.
If it again says no updates found & if you really want new software, then you can follow the last suggestion in my previous post. Note that the last option can (and in some cases, will) void your warranty, especially if not done properly.
Click to expand...
Click to collapse
ok i did as u said i got msg ( your phone is up to date there are no updates available for your phone) whats the best rom for sensation ? and 10x for your help appreciated

speechless said:
ok i did as u said i got msg ( your phone is up to date there are no updates available for your phone) whats the best rom for sensation ? and 10x for your help appreciated
Click to expand...
Click to collapse
ROMs are all about experience mate. If you like something, it's not necessary that I might like it too. Also true the other way round.
What version of android and sense are you looking for?
Also what features are most important to you?

kgs1992 said:
ROMs are all about experience mate. If you like something, it's not necessary that I might like it too. Also true the other way round.
What version of android and sense are you looking for?
Also what features are most important to you?
Click to expand...
Click to collapse
im looking for ics with good preference and stable doesnt metter what version of android or sense

speechless said:
im looking for ics with good preference and stable doesnt metter what version of android or sense
Click to expand...
Click to collapse
Well, ARHD 6.6.4 is stable & pretty smooth and has almost no bugs at all.
Ordroid 7.1.0 has a bug or two, but is stable & fast. I personally feel it also gives better battery performance, although, I can't say it for sure since it's been here just a day now.
You could also try an Insert Coin ROM, which I haven't been able to do myself, and hence cannot tell you anything about it.
Don't go for senseless ROMs yet, since I'm not really sure how stable they are and I wouldn't want to recommend something to you unless I've atleast heard about it.
All ROMs can be found in the Android Development section.

kgs1992 said:
Well, ARHD 6.6.4 is stable & pretty smooth and has almost no bugs at all.
Ordroid 7.1.0 has a bug or two, but is stable & fast. I personally feel it also gives better battery performance, although, I can't say it for sure since it's been here just a day now.
You could also try an Insert Coin ROM, which I haven't been able to do myself, and hence cannot tell you anything about it.
Don't go for senseless ROMs yet, since I'm not really sure how stable they are and I wouldn't want to recommend something to you unless I've atleast heard about it.
All ROMs can be found in the Android Development section.
Click to expand...
Click to collapse
im really appreciated but i have problem in ur guide cant read all things well there is a pic on front that hides half words tried on ff chrome IE pic attached
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

xl VipeR lx said:
If you would like to S-OFF, Install ClockWork Recovery, permanently Root & obtain SuperCID. Follow Steps 1 to 4!
To Debrand or flash an official stock ROM only: follow Steps 1 & 4 only (you may skip step 3 & 4 is you do not need them)
To Root: follow steps 1-3
To install a custom ROM for the first time: Steps 1 & 2 then follow the guide below on how to install a custom Rom (step 3 isn't needed as customs roms are already rooted)
CLICK HERE FOR [GUIDE] TO UNLOCK YOUR SENSATION FREE - WORKING FOR EVERY SENSATION (noobproof) Steps 1-3 Needed! or Steps 1 & 2 plus custom ROM
UPDATE: NEW Recovery 5.0.0.8 - Follow Step 2 below to download and install. you do not need to follow the rest of the steps if you are just updating CWM
For Warranty Purposes/Returns:Follow Step 4 below for removing Clockwork and Root
FOLLOW STEP 5 TO CHANGE BACK TO S-ON - CONFIRMED TO BE WORKING- USE WITH CAUTION
Whether your a noob or not, it nice to see a step by step guide as S-off is developer preview only and doesn't come with much instructions. I have simply Collaborated what is out there into one easy thread. Nothing complex.
here is my very small simple detailed guide. I have put a lot of Time and effort to make sure everyone can benefit so Just push Thanks if it helped
Click here for TROUBLESHOOTING OR FAQ
Step 1. To S-OFF your Sensation - (You do not need to do this if you have S-off already or done this before) - WORKING NOW for TMOUS users
Visit http://revolutionary.io/
download the application for your operating System. AND EXTRACT IT TO A FOLDER
YOU MAY NEED TO DISABLE YOUR ANTIVIRUS PROGRAM- Norton is flagging up Revolutionary as a Virus when it isn't
IMPORTANT
Fill out the form under the download links with your OS, Device, Hboot Version and Serial number. This will give your beta key to enable you to S - OFF. Make a note of this.
How To get your Hboot Version - 3 methods below
1. Run the revolutionary Utility you just downloaded from http://revolutionary.io/ and if it has found your device it should read
"Found your Device: HTC Sensation Z710* Applications -> Development)
4. With the phone switched on (not in HBOOT, just the regular home screen), plug in your USB cable and select HTC sync mode.(IGNORE any warning messages on your phone telling you it cannot find HTC Sync )
5. Launch revolutionary.exe. It should detect the phone and ask for your beta key. Type it (BE CAREFUL, as its case sensitive) or copy and paste it in.
If Revolutionary fails to find your phone verify you have all the drivers installed, try disk drive mode or charging mode (Linux users can use disk drive mode. Confirmed to be working by others)
6. Once you have entered your beta key correctly, follow any on screen prompts or actions from revolutionary and wait for it to S-Off,
7. You're done. Your Device will Successfully have S-OFF....if it hangs on method 3 and doesn't S-Off. See post 2 below for solutions.
IF REVOLUTIONARY SAYS FAILED YOUR PHONE IS NOT SUPPORTED. Go back and check hboot using the methods above. some users are told its failed and they still have S off now. If you have S-off your hboot will now be 1.17.1011 and revolutionary will tell you now your device is not supported
8. Revolutionary will now ask you to Install clockwork recovery mod after S OFF. Type N and install it manually below (the recovery provided is v4.0.1.4 doesn't charge when device is switched off, the one below v5.0.0.1 does charge)
9. Your Device now is S-off.
To install clockwork recovery for the sensation. Follow step 2!
STEP 2. To INSTALL Recovery - v5.0.0.8
1. Download recovery v5.0.0.8 for the Sensation [URL="http://forum.xda-developers.com/showthread.php?t=1277975"]HERE:[/URL] or Multiupload
2. Copy the PG58IMG file into the Root folder of your SD card (The main Folder of your Memory Card)
3. Turn off your phone FUlly and reboot into the Bootloader/HBOOT screen (see post above on how to get to hboot screen)
4. Press Volume up to Accept when it asks" Do you want to start the update"
5. Press Power Off to Reboot back to android after installation is successful (normal screen with homescreen)
6. Delete PG58IMG from your memory card and you can now root using step 3 below or install a custom ROM using CWM (Customs Roms are already rooted)
7. OPTIONAL: Boot into recovery or Completely switch off (Fastboot disabled or remove and reinsert battery)
Follow STEP 4 SUPER CID sub steps 1-6 to get adb running
8. Enter the command "adb shell cat /sys/devices/platform/htc_battery/power_supply/battery/status" Phone will confirm it is "CHARGING"
Charging issues fixed with new clockwork recovery. writing is now BLUE not purple or orange
Step 3. To permanently root your Sensation - (This means you will NOT LOSE ROOT on rebooting)
1. Download the file su-2.3.6.3-ef-signed.zip from here: DOWNLOAD
2. Copy su-2.3.6.3-ef-signed.zip to your SD card root folder (main folder of your memory card)
3. Start clockworkmod recovery (instructions below. See To Start Clockwork recovery)
4. BACKUP YOUR ROM USING CWM BEFORE ATTEMPTING ROOT!
5. Navigate to "Backup & Restore" using the Volume Down button and press select (power button to select) then select "Backup"
6. Select "install zip from sdcard" after backing up
7. Then select "Choose zip from sdcard"
8. Then select "su-2.3.6.3-efgh-signed.zip"
9. Then select "Yes - install su-2.3.6.3-efgh-signed.zip" to confirm
10. Then go back
11. Then reboot.
12. You're rooted!
If you are getting error messages regarding S-OFF, Rooting or installation - Troubleshoot below in post 2
See POST 2(HERE):
STEP 4. WRITE SUPER CID [YOU ONLY NEED TO DO THIS ONCE]- (continue from step 11 below if you have already done this)
(allows you to flash ANY ROM to the device regardless of the carrier. Just click RUU.EXE)
1. Download adb tools here: download for WINDOWS or download for LINUX or from the attachments below
2. On your pc click on your local disk C: Drive (or D: drive for some) (WINDOWS users: Start > My computer > Local Disk (C)
3. Create a new folder called "adb" and extract the files from adb.zip into it. Make sure it doesn't create another folder in the adb folder when extracting
4. open command prompt (or terminal for linux) and type "cd" "followed by the path to your adb folder" (windows users can type "cd C:\adb")
5. Ensure your phone is switched on (regular home screen) and connect it by USB in charging mode (Ensure usb debugging is on settings)
6. enter the command "adb devices". This is to confirm your phone is connected. (It should come back with list of devices attached and your serial number)
7. enter the command "adb reboot-bootloader". (nothing further required device WILL reboot in bootloader)
IF it doesn't you can Manually put the phone in the bootloader/hboot mode
Navigate to fastboot by pressing volume down and pressing power button to select (power off > vol down + power on)
It will take you to the fastboot bootloader screen on your phone
Connect your phone via USB
Your Screen should now read fastboot USB
8. enter the command "fastboot oem writecid 11111111"
9. enter the command "fastboot reboot-bootloader (Wait for it to reboot the bootloader)
10. enter the command "fastboot getvar cid" [it should confirm your CID is 11111111]
11. enter the command "fastboot reboot"
12. You can now flash any ROM you like.
To reinstall any stock ROM after this or De-brand or reinstall a different type of Rom (European, Asian, US).
Just click here to download an Official Rom,
Connect to your phone in charging mode. click the "RUU_pyramid_*****.exe" file you downloaded and follow on screen instructions.
I can confirm SuperCID is successful as i just flashed a Tmous Rom (1.25.***) to my EU unbranded device to check. (added t-mobile tv and other carrier stuff to my apps list)
TO DE-BRAND OR REINSTALL STOCK ROM (Changes to Stock S-off, Removes Root and clockwork)
Reinstall your original stock ROM you had (e.g Vodafone, Tmous, Asian, European unbranded etc. if you are changing back to S-ON)
1. Backup all User Data and Apps (Titanium backup Recommended) SKIP THIS STEP IF YOU WANT TO WIPE EVERYTHING
2. Use the SUPERCID method above. (Confirmed to work)
3. If you cannot get superCID to work. Follow this by Alexp999. HERE: any problems PM ME and i will help
Your phone bootloader will read "PYRAMID PVT SHIP S-OFF RL" after this, Root and clockwork will have been removed now
STEP 5 - CHANGING BACK TO S-ON - PROCEED WITH CAUTION. ONLY DO THIS IF YOU ABSOLUTELY HAVE TO. BEWARE THERE IS A RISK OF BRICKING READ BEFORE GOING TO STEP 1.
YOU MUST Follow this correctly otherwise you could semi-brick your device (Semi bricks recovery by re-flashing RUU). If you follow it correctly YOU WILL GET S-ON SUCCESSFULLY -confirmed by other users
I cannot be held responsible if anything goes wrong but i will help in every situation. 2 unrecoverable bricks so far. 1 due to not flashing RUU
First time i did this with a custom ROM installed - semi-bricked my device (couldn't boot due to security warning as S-on doesn't work with custom roms), restored it using RUU.exe
Second time after S-off i took the following steps and successfully went back to S-ON without any problems and booted up into stock rom.
Confirmed to work by several others as well as myself
1. Follow Step 4 above to get SuperCID - Skip if you already have it
2. Restore your official stock Rom: Just click here to download an Official Rom RESTORE STOCK EVEN IF YOU JUST RESTORED IT RECENTLY OR ARE ALREADY ON STOCK ROM. This is to ensure nothing gets changed in stock for S-on to be successful
So if you are already on a stock ROM or you just went back to stock ROM, i don't care, restore the stock ROM again using the RUU.exe if you don't want to be bricked!
Connect to your phone in charging mode. click the "RUU_pyramid_*****.exe" file you downloaded and follow on screen instructions.
3. Make sure when you download the RUU. download the same or similiar RUU version as your phone came with (e.g. Tmous or EU or Asian etc). As long as you install a stock rom similiar to what you had you should be ok. FAILURE TO DO THIS MAY BRICK YOUR PHONE.
4. Switch your phone on now and let it boot for the first time and just skip through the welcome screen.
5. Go back to Step 4 - SUPERCID and go through 1 to 7 to get to the fastboot bootloader. (so just do what you did before, put adb files in local disk, adb reboot bootloader etc)
6. enter the command "fastboot oem writesecureflag 3" (Thanks Dazweeja)
7. Reboot into bootloader using "fastboot reboot-bootloader" or remove & reinsert the battery and press power on while keeping hold of volume down.
8. Bootloader should now read Pyramid PVT Ship S-ON RL.
9. Remove and reinsert the battery. Press power on as normal
You should now have S-on back and you can return your device or do whatever it is covered again under warranty.
10. IF IT DOESN'T REBOOT and bootloader says ***Security Warning**
Remove and re-insert the battery and go back into bootloader and holding Volume Down +power button select fastboot
11. Run RUU_Pyramid_***.exe to reflash stock rom. (the one u just downloaded in step 1) and then reboot. It should work now
The above method works successfully. So do not under any circumstances try this without going back to stock first using Ruu.exe. and Follow the instructions correctly if you want S-on WITHOUT problems Any doubts or questions PM me and i will get back to you and help you.
Donations welcome as i had a very shaky night experimenting and bricking my device (and having a panic attack over it) to find a safe method for successfully getting S-on back for all you out there complaining about warranty.
To Start Clockwork recovery
1. EITHER make sure fastboot is disabled in settings and shut down your phone
This can be done via Settings > Power> Untick "FAST BOOT" at the bottom.
OR take out your battery and put it back in. (this is easier)
2. Keep hold of the volume down button and switch your phone on.
3. Hboot will start. Navigate to recovery with the vol down button. Press power button to select and enter recovery.
To install a Custom ROM - you will not lose data or apps with this method!
1. Download your chosen ROM by other developers in the development threads and copy the ZIP file to your SD Card ROOT directory
2. Start clockworkmod recovery (instructions above)
3. BACKUP YOUR ROM USING CWM BEFORE ATTEMPTING ROOT! (skip this step if you have already made a backup previously)
4. Navigate to "install zip from sdcard" using the Volume Down button and press select (power button to select)
5. Then select "Choose zip from sdcard"
6. Then select "your_chosen_rom.zip"
7. Then select "Yes - install your_chosen_rom.zip" to confirm
8. Then go back
9. Then reboot.
10. First boot will take quite some time -This is normal, i know you want touch your nice shiny phone but BE PATIENT - ENJOY!
Special Thanks to AlphaRev, unrEVOked Team, Bin4ry & to everyone else that helped with this GUIDE and with S-off and Dazweeja with S-on
Click to expand...
Click to collapse
Attachments:
su-2.3.6.3-efgh-signed.zip
ADB-Windows.zip
ADB-Linux.zip
PG58IMG.zip
Click to expand...
Click to collapse
Quoted from here.

Can someone walk me through what's needed to root/recovery/custom ROM with 2.00.0002?

I've been searching around for hours now trying to work this is and, as always happens here, the information is a mess and disparate.
Is anyone able to link me a good walkthrough to do this? I'm not new to rooting terminology generally but I am totally new to the Desire S.
HBOOT is as above, S-ON, 2.3.5.
Thanks.

There is a nice thread for beginners and others in the general section. Also there is an INDEX thread in the Development section. All the info you need is there. Only some info that you may not find explained in this guides:
currently there are 2 ways to achieve what you need:
1) unlock with htcdev.com (but stays S-ON)
2) S-OFF with the Revolutionary tool (only older bootloader supported - 0.98.0000 and 0.98.0002)
Option 1 will give you the ability to flash custom recoveries, kernels and ROMs. The cons of this way are as follows: you are officially agree with HTC that you are voiding your warranty. The kernel has to be flashed via fastboot or in other words you need a PC each time you want to flash a new ROM. Going this way also means that you cannot change your radio and bootloader to another version (not that there is a reason to do so...).
Option 2 will give you a completely unlocked device with the ability to flash anything you want on it, but to get it you have to downgrade your system to a supported by Revolutionary exploit. And the need to flash the kernel separately is not present here (IMO it is the main advantage)
I hope the above is clear enough and after making the decision of which will be your method the detailed steps can be found in the guides I have mentioned in the beginning.
Good luck

amidabuddha said:
There is a nice thread for beginners and others in the general section. Also there is an INDEX thread in the Development section. All the info you need is there. Only some info that you may not find explained in this guides:
currently there are 2 ways to achieve what you need:
1) unlock with htcdev.com (but stays S-ON)
2) S-OFF with the Revolutionary tool (only older bootloader supported - 0.98.0000 and 0.98.0002)
Option 1 will give you the ability to flash custom recoveries, kernels and ROMs. The cons of this way are as follows: you are officially agree with HTC that you are voiding your warranty. The kernel has to be flashed via fastboot or in other words you need a PC each time you want to flash a new ROM. Going this way also means that you cannot change your radio and bootloader to another version (not that there is a reason to do so...).
Option 2 will give you a completely unlocked device with the ability to flash anything you want on it, but to get it you have to downgrade your system to a supported by Revolutionary exploit. And the need to flash the kernel separately is not present here (IMO it is the main advantage)
I hope the above is clear enough and after making the decision of which will be your method the detailed steps can be found in the guides I have mentioned in the beginning.
Good luck
Click to expand...
Click to collapse
My main problem now is that I can't get ADB/HTC Drivers to work on this computer. I keep getting device not found.
So I can't perform the required steps in the guides for HBOOT downgrades :/

Have you installed the HTC sync product as that usually installs the required HTC driver
Sywepd form my DsereiS

Is abd debugging on?
Sent from my HTC Desire S using xda premium (nah I dun earn enuf to buy premium)

rain987 said:
Is abd debugging on?
Click to expand...
Click to collapse
USB debugging option must be on
You'll find this in
GB
Settings applications development (from memory)
ICS
From settings development
Sywepd form my DsereiS

Debugging is on and I have installed HTC Sync several times (with AV and UAC off for good measure) plus used the stand alone installed from unrevoked and it still will not find the device.

G8D said:
Debugging is on and I have installed HTC Sync several times (with AV and UAC off for good measure) plus used the stand alone installed from unrevoked and it still will not find the device.
Click to expand...
Click to collapse
Please post a screenshot of your cmd after typing "adb devices"
Sent from my HTC Desire S

adb root is needed ?
Sent from my Desire S

No most probably he has some permission issues
Sent from my Desire S

I've installed Wubi and am now trying, poorly, to install ADK/JDK for it. I'm hoping this will allow me to see the device.
I have a screenshot of what windows says, I'll upload it when off Ubuntu.

Most of the guides are for Windows, you can still do everything under Linux, but you have to search more. There is a link for Ubuntu adb setup in the guide in my signature, check it
Sent from my HTC Desire S

I've got it set up now on Ubuntu. The issue now is that the phone won't go into USB debugging mode. It just doesn't. I need it to do so to give permissions to ADB and to use ADB commands in general.
It's set to go into that mode in settings but just won't, any ideas?
For reference: ./adb devices see my phone when connect (ZTE Blade), albeit without permissions.
EDIT: also, probably unrelated, the HTC GPS goes haywire all the time. Opening itself without prompt and interrupting everything. It does it every time USB is plugged in too.
EDIT 2: also maybe unrelated but the phone cannot turn off.. holding the power button simply turns the screen off.
Edits may not be relevant but you can see why I'm so desperate to root this phone.
EDIT3: I managed to get the 8 digitis required for the device thanks to going into Fastboot via the bootloader but ADB still won't find it.
I am following this guide http://forum.xda-developers.com/showthread.php?t=921169
The main issue does seem to be the phone refusing USB debugging mode :/

This sounds like a real mess. I would suggest another approach. Since fastboot is working you can check your main version and use a RUU. And your phone will be like new again
Sent from my HTC Desire S

Had unlocked bootloader through htc dev, but i still have to manually flash roms, i am looking for easy method to get S-off on 2.00.002.

zenilshroff said:
Had unlocked bootloader through htc dev, but i still have to manually flash roms, i am looking for easy method to get S-off on 2.00.002.
Click to expand...
Click to collapse
There are exactly 3 downgrade tutorials in the index thread about that
Sent from my HTC Desire S

For rooting my device i found this step. I have read a lot and have adjusted this steps to my needs... Maybe you or someone else can make profit off it.
1. to not avoid warrancy ( Dont use htcdev unlock!)
2. download adb tools http://forum.xda-developers.com/showthread.php?t=1272595
3. install htc sync for drivers then disable/uninstall htc sync. (windows)
4. check your phone software and hboot version on boot menu (GUIDE LINK)
http://forum.xda-developers.com/showthread.php?t=1186401
5. downgrade to oldest RUU with hboot 0.90.xxx something if don’t want use htcdev unlock
1.28.401.1 RUU_Saga_HTC_Europe_1.28.401.1_Radio_20.28b.30.080 5U_38.03.02.11_M_release_177977_signed.exe
above ruu is only fore unbranded europe phones... YOU may need a different one!!!!!!!!!!!
6. to do this it depends on software on phone.
if its new like 2.11.xx-> use tacoroot guide.
http://forum.xda-developers.com/showthread.php?t=1443636
if its older like 2.10.xx use the zergrush guide.
http://forum.xda-developers.com/showthread.php?t=1399331&highlight=zergrush (deze heb ik moeten gebruiken)
7. use revolutionary guide to S-Off And root ( this is possible only in oldest version of original RUU).
http://forum.xda-developers.com/showthread.php?t=1186401
http://revolutionary.io/
8Update hboot naar eng hboot:
http://forum.xda-developers.com/showthread.php?t=1679338
9. install 4ext recovery touch. do your backups.
We're going to install EXT4 recovery. But first download ''4EXT_Recovery_v2.2.7_RC5.zip'' and extract the recovery.img file to the folder where you installed fastboot and adb. If you followed the tutorial in step 1 the folder will be ''C:\android-tools''
Now make sure Fast Boot is turned off on your phone. Go to ''Settings > Power > Fast Boot'' to turn it off. Unplug your phone from your computer, it's time to turn of your phone and boot into your bootloader.
Press Volume Down Button and Power Button at the same time to boot into recovery. Now connect your phone to your computer and select fastboot.
(Power button to select, Volume Down/Up to navigate)
Go to start->run-> type cmd and press enter. A command prompt will now appear.
Type:
cd c:\android-tools [press enter]
fastboot flash recovery recovery.img [press enter]
EXT4 recovery is now installed on your phone. Turn off your phone in bootloader menu.
EXT 4 later updaten naar: http://forum.xda-developers.com/showthread.php?t=1377745
10. download preferrable custom rom. Copy it to SDCARD root.
11. Flash custom rom. ( GUIDE LINK )
How To: Flash Custom ROMs using Recovery (Method 1)
(You can use your default recovery from Revolutionary tool but I recommend using 4EXTRecovery)
1. Copy your custom ROM "zip" file to your SD card (Root directory).
2. Turn off your phone.
3. Turn on your phone by holding the power button and the volume down button together.
4. Once you see the white screen, choose "Recovery"
5. Make a full wipe/format and clear all cache.
6. Choose "install from sdcard/zip file" and then choose your Custom ROM zip file from your SD card to flash your Custom ROM.
Optional: If you want to use 4EXTRecovery, just flash it like you are flashing your custom ROM(Step 6). Just do it before you flash your new ROM.
.
12. Enjoy and have a beer!
-when using Win7 you can start CMD in specific folder (avoid 5-10 cd's or long/path/to/folder) by holding shift+right click/open command window here)

amidabuddha said:
This sounds like a real mess. I would suggest another approach. Since fastboot is working you can check your main version and use a RUU. And your phone will be like new again
Sent from my HTC Desire S
Click to expand...
Click to collapse
How would I do this? Would this revert the HBOOT also?
Build number is 2.10.401.8 CL1536318. Phone seems unbranded. No bloatware or branded boot screen anyway.

G8D said:
How would I do this? Would this revert the HBOOT also?
Build number is 2.10.401.8 CL1536318. Phone seems unbranded. No bloatware or branded boot screen anyway.
Click to expand...
Click to collapse
It will be like you just bought it (and the hboot version will be the same as now). It will erase your data and apps so better make a Google sync and some backups.
Then reboot the phone to bootloader: power it off completely, then hold Volume down and press power. Still holding the Volume Down button release the Power button after several seconds.
When in the bootloader connect it to PC and make sure that you see FASTBOOT USB written on the phone screen.
Then open command prompt (you said that fastboot is working so I assume you know hot to use it) and type:
Code:
[B]fastboot devices[/B] - [I]your serial number should appear[/I]
[B]fastboot getvar version-main[/B] - [I]the output [B]should [/B]be 2.10.401.8[/I]
[B]fastboot getvar cidnum[/B] - [I]the output [B]must [/B]be one of these: HTC__001, HTC__E11, HTC__032, HTC__203, HTC__Y13, HTC__102, HTC__405, HTC__N34, HTC__304, HTC__A07, HTC__016[/I]
IF the you have the right output download RUU_Saga_S_HTC_Europe_2.10.401.8_Radio_20.4801.30.0822U_3822.10.08.04_M_release_225161_signed.exe
Run it in Windows while your phone is connected in FASTBOOT USB mode as described above.
After RUU finishes your phone should be completely stock and if your problems are software based they should be gone.
IMPORTANT: the above is valid if you did not attempted to unlock the phone via htcdev.com or flash any RUU or other stuff. If you did then some additional steps may be required
Good luck

The problems persisted through the reflash :/
It did go into debug mode ONCE earlier today before I flashed it but it was short lived (and the laptop overheated and shutdown so the connection was lost :/

HTC Desire 826... Install TWRP Recovery and Root. (100% Working)

Hello Guys,
Today I am going to assist you on rooting your HTC Desire 826 (All Models).
We will be using the conventional method of rooting i.e. flashing SuperSU through recovery. Just follow my steps carefully
and you will root your device successfully without any mess....
Note : The first TWRP recovery made for this device was not perfect. After installing the recovery the touch wasn't working on some models.....However in this post I have provided the Chinese Mod of that TWRP recovery... This works in all models of HTC Desire 826....Thanks to the Chinese guy whose modified the recovery... Don't worry, the recovery is in English, only installation is Chinese and that to only 2 steps which I will explain in this post.
Alert: I am not responsible for any kind of brick(hard or soft) that your device may suffer during this procedure...This method is full proofed but only when you follow it as mentioned...So proceed at your own risk.
1. Installing all necessary drivers
The first step is to install proper drivers for your device on PC. I would recommend to download and install HTC Sync Manager and connect your device to PC...HTC Sync Manager will automatically install all the required drivers that we need for our process...
You can download it from the below link..
https://www.mediafire.com/?m5xcho7w534p936
2. Download Minimal ADB Tools
Now download the adb tools required for our process from the below link
https://www.mediafire.com/folder/483igl8a45dy2/adb
3. Unlock your Bootloader (Very Important)
This step is must.....You have to unlock your bootloader before proceeding further.....
Warning : Unlocking your bootloader will void your software warranty...Also after unlocking the bootloader, the device will be reset... So do backup all your important data from internal memory to sd card or to pc.
You can use 2 methods to unlock your bootloader..
1. By using kingo bootloader unlock... Download it from here http://www.mediafire.com/download/221m4bgsptnmhgj/HTC_Bootloader_Unlock.exe
Download and install this software... Now Connect your phone to PC....Make sure USB Debugging is enabled on your device...Now open Kingo Bootloader Unlock...The software will automatically detect your device....Click on Unlock...It will unlock your phone's bootloader automatically and you're ready to go.....
2. By using HTC's official unlock method...
If the above method fails then goto http://www.htcdev.com/ and create an account and then follow the steps given there to unlock your bootloader.....
Note : This process includes a step where you need to download adb files....No need to download from there....The link for adb files provided by me are sufficient. Just proceed the steps using those adb files.
Now download SuperSU zip by Chainfire from the below link and place the file in your internal memory
http://www.supersu.com/download
Please download the latest zip file and not the apk file.
Important : Go on the above link and Download the latest flashable zip file otherwise you will suffer a bootloop and your device will be stuck on HTC logo
4. Installing TWRP recovery
After you have successfully unlocked your device's bootloader, u need to install the TWRP recovery.
Download the TWRP recovery from here .... https://www.mediafire.com/?hn2j75fxj6hkj9w
Step 1 : Goto Fasboot USB mode
Connect your device to PC.
Open the adb folder downloaded before. While holding the shift key, right click anywhere on the white space inside the folder...
You will see an option namely - Open command prompt here
Click on that........Now type the following command in the cmd window that opens up...
adb reboot bootloader
This will boot your device to bootloader mode...Make sure it says "bootloader usb" there.
Step 2 : Install TWRP
Now double click and open the twrp file downloaded previously.....A command promt will open up with something written in Chinese... Press Enter twice and the twrp recovery will be pushed to your device.....
Done...You have succesfully installed TWRP recovery on your device.
5. Flashing SuperSU
Now disconnect your device from pc....From "fastboot" mode use the up/down volume button to navigate to "hboot" option and press power button to goto "hboot" menu...From there goto "recovery" option and press power button to enter the recovery menu...
TWRP recovery will open up....
On the first screen you will see a warning....Just ignore that and goto the bottom where its written "Swipe to Allow Modifications" and swipe right.
Now a menu will come up...
Select the first option i.e Install
Now Search the SuperSU.zip file in your internal memory that you downloaded previously and select it.
Recovery will flash the zip file.
Now reboot your device.....
Hurrah! Your device is successfully rooted
Goto App launcher and check if there is SuperSU app there. If yes then your device is succesfully rooted.
To verify whether your device is properly rooted, download the root checker app from play store....
If you have any doubts regarding this post, do post your replies so that I can resolve them.
This thread has been started for HTC Desire 826 Device......
If you have any news or mods regarding this device or any custom ROM, feel free to share with everyone via this post.....
Hit THANKS button if I helped you or if you liked my post.

after instaling supersu ... phone is not booting it is hanging in htc screen

karth83 said:
after instaling supersu ... phone is not booting it is hanging in htc screen
Click to expand...
Click to collapse
got the stock rom back with the help of gsmdevelopers forum

karth83 said:
got the stock rom back with the help of gsmdevelopers forum
Click to expand...
Click to collapse
Now is your phone rooted?

Ishan16 said:
Now is your phone rooted?
Click to expand...
Click to collapse
no it is back to stock. atleast i m happy for phone working

can i borrow acc in htcdev ?

pokemon_2201 said:
can i borrow acc in htcdev ?
Click to expand...
Click to collapse
you can easily create, what happened?

Ishan16 said:
Hello Guys,
Today I am going to assist you on rooting your HTC Desire 826 (All Models).
We will be using the conventional method of rooting i.e. flashing SuperSU through recovery. Just follow my steps carefully
and you will root your device successfully without any mess....
Note : The first TWRP recovery made for this device was not perfect. After installing the recovery the touch wasn't working on some models.....However in this post I have provided the Chinese Mod of that TWRP recovery... This works in all models of HTC Desire 826....Thanks to the Chinese guy whose modified the recovery... Don't worry, the recovery is in English, only installation is Chinese and that to only 2 steps which I will explain in this post.
Alert: I am not responsible for any kind of brick(hard or soft) that your device may suffer during this procedure...This method is full proofed but only when you follow it as mentioned...So proceed at your own risk.
1. Installing all necessary drivers
The first step is to install proper drivers for your device on PC. I would recommend to download and install HTC Sync Manager and connect your device to PC...HTC Sync Manager will automatically install all the required drivers that we need for our process...
You can download it from the below link..
https://www.mediafire.com/?m5xcho7w534p936
2. Download Minimal ADB Tools
Now download the adb tools required for our process from the below link
https://www.mediafire.com/folder/483igl8a45dy2/adb
3. Unlock your Bootloader (Very Important)
This step is must.....You have to unlock your bootloader before proceeding further.....
Warning : Unlocking your bootloader will void your software warranty...Also after unlocking the bootloader, the device will be reset... So do backup all your important data from internal memory to sd card or to pc.
You can use 2 methods to unlock your bootloader..
1. By using kingo bootloader unlock... Download it from here http://www.mediafire.com/download/221m4bgsptnmhgj/HTC_Bootloader_Unlock.exe
Download and install this software... Now Connect your phone to PC....Make sure USB Debugging is enabled on your device...Now open Kingo Bootloader Unlock...The software will automatically detect your device....Click on Unlock...It will unlock your phone's bootloader automatically and you're ready to go.....
2. By using HTC's official unlock method...
If the above method fails then goto http://www.htcdev.com/ and create an account and then follow the steps given there to unlock your bootloader.....
Note : This process includes a step where you need to download adb files....No need to download from there....The link for adb files provided by me are sufficient. Just proceed the steps using those adb files.
Now download SuperSU zip by Chainfire from the below link and place the file in your internal memory
https://www.mediafire.com/?62mm4vg153a8jzf
4. Installing TWRP recovery
After you have successfully unlocked your device's bootloader, u need to install the TWRP recovery.
Download the TWRP recovery from here .... https://www.mediafire.com/?hn2j75fxj6hkj9w
Step 1 : Goto Fasboot USB mode
Connect your device to PC.
Open the adb folder downloaded before. While holding the shift key, right click anywhere on the white space inside the folder...
You will see an option namely - Open command prompt here
Click on that........Now type the following command in the cmd window that opens up...
adb reboot bootloader
This will boot your device to bootloader mode...Make sure it says "bootloader usb" there.
Step 2 : Install TWRP
Now double click and open the twrp file downloaded previously.....A command promt will open up with something written in Chinese... Press Enter twice and the twrp recovery will be pushed to your device.....
Done...You have succesfully installed TWRP recovery on your device.
5. Flashing SuperSU
Now disconnect your device from pc....From "fastboot" mode use the up/down volume button to navigate to "hboot" option and press power button to goto "hboot" menu...From there goto "recovery" option and press power button to enter the recovery menu...
TWRP recovery will open up....
On the first screen you will see a warning....Just ignore that and goto the bottom where its written "Swipe to Allow Modifications" and swipe right.
Now a menu will come up...
Select the first option i.e Install
Now Search the SuperSU.zip file in your internal memory that you downloaded previously and select it.
Recovery will flash the zip file.
Now reboot your device.....
Hurrah! Your device is successfully rooted
Goto App launcher and check if there is SuperSU app there. If yes then your device is succesfully rooted.
To verify whether your device is properly rooted, download the root checker app from play store....
If you have any doubts regarding this post, do post your replies so that I can resolve them.
This thread has been started for HTC Desire 826 Device......
If you have any news or mods regarding this device or any custom ROM, feel free to share with everyone via this post.....
Hit THANKS button if I helped you or if you liked my post.
Click to expand...
Click to collapse
It will work with marshmallow

saifsalee said:
It will work with marshmallow
Click to expand...
Click to collapse
Yes

thanks it`s working fine
Ishan16 said:
Yes
Click to expand...
Click to collapse
yes its working fine just we have to install latest supersu zip file
otherwise it will stuck on boot logo

note
karth83 said:
you can easily create, what happened?
Click to expand...
Click to collapse
I have big trouble to create acc

pokemon_2201 said:
I have big trouble to create acc
Click to expand...
Click to collapse
U have to just create account with your email address. Please explain the actual problem.

what device you have ? HTC D826 Dtul ?

success rate
Dont mind but what is the success rate and if anything happens then what shud i do to install stock ROM plus does it work on marshmellow
---------- Post added at 08:42 PM ---------- Previous post was at 08:37 PM ----------
saifsalee said:
yes its working fine just we have to install latest supersu zip file
otherwise it will stuck on boot logo
Click to expand...
Click to collapse
from where i can get latest supersu zip file

rahuld41 said:
Dont mind but what is the success rate and if anything happens then what shud i do to install stock ROM plus does it work on marshmellow
---------- Post added at 08:42 PM ---------- Previous post was at 08:37 PM ----------
from where i can get latest supersu zip file
Click to expand...
Click to collapse
it works 100%
just follow the link for updated SuperSU zip filee
https://forum.xda-developers.com/showthread.php?t=1538053

Hang on boot screen
karth83 said:
no it is back to stock. atleast i m happy for phone working
Click to expand...
Click to collapse
I got same problem with HTC desire 826 after fleshing supersu plz tel how to restore back

htc desire 826 root problem
karth83 said:
after instaling supersu ... phone is not booting it is hanging in htc screen
Click to expand...
Click to collapse
i have also same problem plz can you help me to solve this issue.

help me could not flash supersu
i Install the twrp and after that when i flash supersu zip file it say sucess but do not install supersu help me i try three times

I tried to root my phone using twrp. after i rooted it using TWRP my phone isnt turning on... its stuck on boot logo (HTC) I cant turn it off ? How can I turn it off ?

Boot loop
After flashing the superSU, I'm stuck in the HTC logo screen. I tried to hard reset the phone to enter the hdboot menu, but I failed, because it gets stuck in the logo screen again!
I'm literally freaking out!
Can you please help me? Neither hard reset nor soft reset is working and I don't know what to do.
please help

[DOWNGRADE] Oreo to Nougat

Our devices have been updated to Oreo by HTC, that was a good new since there are many reports and claims from the End Users that was an unstable update, so how to downgrade to a stable Nougat version, here is the way:
[IMPORTANT]
TESTED ON HTC U Ultra DUAL SIM (INDIA - SEA VERSION) and S-ON DEVICE ONLY with UNLOCKED BOOTLOADER, BUT THIS MIGHT WORK ON OTHER VARIANTS
I. PREPARATION
1. HTC Sync Manager for drivers: http://www.htc.com/us/software/htc-sync-manager/
2. ADB and Fastboot, u can use the latest version of Minimal ADB and Fastboot:
https://forum.xda-developers.com/showthread.php?t=2317790 (thanks to @shimp208 for this great tool)
3. Stock Nougat RUU:
https://androidfilehost.com/?a=show&w=files&flid=164315 (thanks to @sardroid for RUUs uploading)
or for the tested device, this RUU has been used:
https://androidfilehost.com/?fid=962187416754465286 (thanks to @minhnewpro for uploading this)
or the latest 1.64.400.10 for Dual SEA - India I have just found
https://vnrom.net/2018/03/rom-stock-ruu-zip-cho-htc-u-ultra-ocean-note/ (original link to support to the RUU publisher)
4. Latest version of TWRP recovery:
https://twrp.me/htc/htcuultra.html (thanks Team Win for this popular and useful TWRP)
5. The most important, HTC Version Tool:
https://drive.google.com/file/d/1ubjDGNqCfIply-aRN8C7IQNb-YVkD4M7/view (thanks to @sabpprook for this super super great tool ^^ )
II. DOWNGRADING TO NOUGAT
1. Install HTC Sync Manager, ADB and Fastboot tool, extract HTC_Version_Tool.exe and copy it and twrp to your adb and fastboot folder
2. If your device's bootloader is unlocked, ignore this, if not
- go to https://www.htcdev.com/
- register for an account and then follow the site's instruction to unlock bootloader
3. Reboot your device into download mode and flash TWRP by opening cmd at your adb and fastboot folder and type:
Code:
fastboot devices
fastboot flash recovery twrp-3.2.1-1-oce.img
4. Boot device into Bootloader mode then boot to TWRP recovery
5. While your phone entered TWRP, open cmd, type:
Code:
adb devices
to check if your device is recognized
6. Once your device is recognized, open HTC_Version_Tool.exe
7. Type the version of the RUU that you are going to flash at new version line, for example, mine is 1.64.400.3 and press enter
8. Rename the RUU file to 2PZCIMG and REMEMBER TO KEEP .zip EXTENSION, then copy it to the root folder of SD Card (External SD Card is recommended)
9. Reboot your device into download mode, press Vol+, then press Power to start flashing 7.0 RUU
10. After flashing, your device can boot into Android but no signal or IMEI received, dont worry, continue these steps
11. Reboot into download mode, reflash TWRP, then boot to TWRP
12. At cmd windows, type
Code:
adb devices
adb shell
mke2fs -t ext4 /dev/block/bootdevice/by-name/persist
13. Reboot device to check if IMEI received
14. If IMEI received, you should reflash stock recovery from RUU.zip, but reflash the RUU is recommended.
If not, try to format the persist partition manually again (step 12)
15. Done
And at last, I want to say big thanks to @sabpprook for helping me a lot to downgrade the device and @paulpier007 for HTC U11 downgrade method which gave me the idea for downgrading our U Ultra (https://forum.xda-developers.com/u11/how-to/guide-downgrade-htc-u11-oreo-to-nougat-t3754481)

#reserved1

#reserved2

Shouldnt be posted in this one mate this custom roms should be q&a
But thanks

panda968 said:
Shouldnt be posted in this one mate this custom roms should be q&a
But thanks
Click to expand...
Click to collapse
Oops sorry for that :| how can i move this topic to Q&A

Its ok mate im not mod
I wish haha
But its ik your helping people dont stress

panda968 said:
Its ok mate im not mod
I wish haha
But its ik your helping people dont stress
Click to expand...
Click to collapse
Yeah I will not make this mistake next time tks for saying me that bro

Dont stress mate
As i said your helping as htc is very confusing with there firmware

panda968 said:
Dont stress mate
As i said your helping as htc is very confusing with there firmware
Click to expand...
Click to collapse
Yeah I got no stress, hope someone who has troubles with Oreo and wants to go back to Nougat will downgrade successfully
Sent from my HTC U Ultra using XDA Labs

lapaho said:
Our devices have been updated to Oreo by HTC, that was a good new since there are many reports and claims from the End Users that was an unstable update, so how to downgrade to a stable Nougat version, here is the way:
[IMPORTANT]
TESTED ON HTC U Ultra DUAL SIM (INDIA - SEA VERSION) and S-ON DEVICE ONLY with UNLOCKED BOOTLOADER, BUT THIS MIGHT WORK ON OTHER VARIANTS
I. PREPARATION
1. HTC Sync Manager for drivers: http://www.htc.com/us/software/htc-sync-manager/
2. ADB and Fastboot, u can use the latest version of Minimal ADB and Fastboot:
https://forum.xda-developers.com/showthread.php?t=2317790 (thanks to @shimp208 for this great tool)
3. Stock Nougat RUU:
https://androidfilehost.com/?a=show&w=files&flid=164315 (thanks to @sardroid for RUUs uploading)
or for the tested device, this RUU has been used:
https://androidfilehost.com/?fid=962187416754465286 (thanks to @minhnewpro for uploading this)
or the latest 1.64.400.10 for Dual SEA - India I have just found
https://vnrom.net/2018/03/rom-stock-ruu-zip-cho-htc-u-ultra-ocean-note/ (original link to support to the RUU publisher)
4. Latest version of TWRP recovery:
https://twrp.me/htc/htcuultra.html (thanks Team Win for this popular and useful TWRP)
5. The most important, HTC Version Tool:
https://drive.google.com/file/d/1ubjDGNqCfIply-aRN8C7IQNb-YVkD4M7/view (thanks to @sabpprook for this super super great tool ^^ )
II. DOWNGRADING TO NOUGAT
1. Install HTC Sync Manager, ADB and Fastboot tool, extract HTC_Version_Tool.exe and copy it and twrp to your adb and fastboot folder
2. If your device's bootloader is unlocked, ignore this, if not
- go to https://www.htcdev.com/
- register for an account and then follow the site's instruction to unlock bootloader
3. Reboot your device into download mode and flash TWRP by opening cmd at your adb and fastboot folder and type:
Code:
fastboot devices
fastboot flash recovery twrp-3.2.1-1-oce.img
4. Boot device into Bootloader mode then boot to TWRP recovery
5. While your phone entered TWRP, open cmd, type:
Code:
adb devices
to check if your device is recognized
6. Once your device is recognized, open HTC_Version_Tool.exe
7. Type the version of the RUU that you are going to flash at new version line, for example, mine is 1.64.400.3 and press enter
8. Rename the RUU file to 2PZCIMG and REMEMBER TO KEEP .zip EXTENSION, then copy it to the root folder of SD Card (External SD Card is recommended)
9. Reboot your device into download mode, press Vol+, then press Power to start flashing 7.0 RUU
10. After flashing, your device can boot into Android but no signal or IMEI received, dont worry, continue these steps
11. Reboot into download mode, reflash TWRP, then boot to TWRP
12. At cmd windows, type
Code:
adb devices
adb shell
mke2fs -t ext4 /dev/block/bootdevice/by-name/persist
13. Reboot device to check if IMEI received
14. If IMEI received, you should reflash stock recovery from RUU.zip, but reflash the RUU is recommended.
If not, try to format the persist partition manually again
15. Done
And at last, I want to say big thanks to @sabpprook for helping me a lot to downgrade the device and @paulpier007 for HTC U11 downgrade method which gave me the idea for downgrading our U Ultra (https://forum.xda-developers.com/u11/how-to/guide-downgrade-htc-u11-oreo-to-nougat-t3754481)
Click to expand...
Click to collapse
Excellent guide .... this method is sure to go back without problems and does not need to be in S-OFF.

paulpier007 said:
Our devices have been updated to Oreo by HTC, that was a good new since there are many reports and claims from the End Users that was an unstable update, so how to downgrade to a stable Nougat version, here is the way:
[IMPORTANT]
TESTED ON HTC U Ultra DUAL SIM (INDIA - SEA VERSION) and S-ON DEVICE ONLY with UNLOCKED BOOTLOADER, BUT THIS MIGHT WORK ON OTHER VARIANTS
I. PREPARATION
1. HTC Sync Manager for drivers: http://www.htc.com/us/software/htc-sync-manager/
2. ADB and Fastboot, u can use the latest version of Minimal ADB and Fastboot:
https://forum.xda-developers.com/showthread.php?t=2317790 (thanks to @shimp208 for this great tool)
3. Stock Nougat RUU:
https://androidfilehost.com/?a=show&w=files&flid=164315 (thanks to @sardroid for RUUs uploading)
or for the tested device, this RUU has been used:
https://androidfilehost.com/?fid=962187416754465286 (thanks to @minhnewpro for uploading this)
or the latest 1.64.400.10 for Dual SEA - India I have just found
https://vnrom.net/2018/03/rom-stock-ruu-zip-cho-htc-u-ultra-ocean-note/ (original link to support to the RUU publisher)
4. Latest version of TWRP recovery:
https://twrp.me/htc/htcuultra.html (thanks Team Win for this popular and useful TWRP)
5. The most important, HTC Version Tool:
https://drive.google.com/file/d/1ubjDGNqCfIply-aRN8C7IQNb-YVkD4M7/view (thanks to @sabpprook for this super super great tool ^^ )
II. DOWNGRADING TO NOUGAT
1. Install HTC Sync Manager, ADB and Fastboot tool, extract HTC_Version_Tool.exe and copy it and twrp to your adb and fastboot folder
2. If your device's bootloader is unlocked, ignore this, if not
- go to https://www.htcdev.com/
- register for an account and then follow the site's instruction to unlock bootloader
3. Reboot your device into download mode and flash TWRP by opening cmd at your adb and fastboot folder and type:
4. Boot device into Bootloader mode then boot to TWRP recovery
5. While your phone entered TWRP, open cmd, type:
to check if your device is recognized
6. Once your device is recognized, open HTC_Version_Tool.exe
7. Type the version of the RUU that you are going to flash at new version line, for example, mine is 1.64.400.3 and press enter
8. Rename the RUU file to 2PZCIMG and REMEMBER TO KEEP .zip EXTENSION, then copy it to the root folder of SD Card (External SD Card is recommended)
9. Reboot your device into download mode, press Vol+, then press Power to start flashing 7.0 RUU
10. After flashing, your device can boot into Android but no signal or IMEI received, dont worry, continue these steps
11. Reboot into download mode, reflash TWRP, then boot to TWRP
12. At cmd windows, type
Excellent guide .... this method is sure to go back without problems and does not need to be in S-OFF.
Click to expand...
Click to collapse
That got something as same as the method with U11 that u have posted
Sent from my HTC U Ultra using XDA Labs

where can i get ruu for oreo

waseem.gani said:
where can i get ruu for oreo
Click to expand...
Click to collapse
We are searching for it but still no results

lapaho said:
That got something as same as the method with U11 that u have posted
Sent from my HTC U Ultra using XDA Labs
Click to expand...
Click to collapse
The procedure is almost identical to that of HTC U11 with the exception of the recovery of the IMEI code that forces you to make an extra step ...

paulpier007 said:
The procedure is almost identical to that of HTC U11 with the exception of the recovery of the IMEI code that forces you to make an extra step ...
Click to expand...
Click to collapse
Yes, because U Ultra won't re-build persist partition while rebooting after wipe it, therefore we need format it manually

lapaho said:
Yeah I got no stress, hope someone who has troubles with Oreo and wants to go back to Nougat will downgrade successfully
Sent from my HTC U Ultra using XDA Labs
Click to expand...
Click to collapse
You helped me.
Been a lurker for years. You made me sign back into my account just so I can personally say thank you for posting this. I've been trying to many different things to no avail. I'm finally back on 7.0.
Thank you for sharing your knowledge. Best wishes to you pal.

LogisticsXLS said:
You helped me.
Been a lurker for years. You made me sign back into my account just so I can personally say thank you for posting this. I've been trying to many different things to no avail. I'm finally back on 7.0.
Thank you for sharing your knowledge. Best wishes to you pal.
Click to expand...
Click to collapse
I'm happy to hear that from u and don't forget to thanks @sabpprook, he has helped us a lot to downgrade our U Ultra

Hello,
I cannot downgrade. I always get the following errors when it says press VolUp to start flash and Start ui_updating:
22 RU_HEADER_ERROR
22 RU_HEADER_ERROR
FAIL22 RU_HEADER_ERROR
I already tried to flash with two different RUUs.

LogisticsXLS said:
You helped me.
Been a lurker for years. You made me sign back into my account just so I can personally say thank you for posting this. I've been trying to many different things to no avail. I'm finally back on 7.0.
Thank you for sharing your knowledge. Best wishes to you pal.
Click to expand...
Click to collapse
vinczetibor said:
Hello,
I cannot downgrade. I always get the following errors when it says press VolUp to start flash and Start ui_updating:
22 RU_HEADER_ERROR
22 RU_HEADER_ERROR
FAIL22 RU_HEADER_ERROR
I already tried to flash with two different RUUs.
Click to expand...
Click to collapse
What is your variant ?

India (CID 60) dualsim and 2.19.400.1 firmware on my phone. Unlocked bootloader, S-On.