downgrade it's possible? HIAEUHL - HTC One A9

how can i downgrade the htc one a9 to stock 6.0 firmware (1.27) for install cyanogenmod? help me please

Download and install the RUU that match with your Phone from this side:
http://forum.xda-developers.com/one-a9/general/wip-ruu-htc-one-a9-t3240344
attention: All Date of your Phone get lost, inclusive internal SD-Card.

Downgrade just with S-OFF phone!

CarefulThrone65 said:
how can i downgrade the htc one a9 to stock 6.0 firmware (1.27) for install cyanogenmod? help me please
Click to expand...
Click to collapse
As stated above, you can downgrade using a RUU from my collection. The RUU must match your CID and MID. You also need S-OFF to downgrade. You can achieve s-off with Sunshine (25$) of with the XTC2CLIP box (cost more than 100$).

Unlock you phone, flash twrp.
Restart in recovery go to advanced, terminal and digit this command:
echo -ne "1.27.401.5\x00\x00" | dd of=/dev/block/mmcblk0p28 bs=1 seek=2208
after download https://www.androidfilehost.com/?fid=24399994186369413 rename it in 2PQ9IMG.zip and copy in your sd card.
Restart in download mode and press volume up.

xire68 said:
Unlock you phone, flash twrp.
Restart in recovery go to advanced, terminal and digit this command:
echo -ne "1.27.401.5\x00\x00" | dd of=/dev/block/mmcblk0p28 bs=1 seek=2208
after download https://www.androidfilehost.com/?fid=24399994186369413 rename it in 2PQ9IMG.zip and copy in your sd card.
Restart in download mode and press volume up.
Click to expand...
Click to collapse
Hi, do you have a link for the firmware for the (32gb) US Unlocked version?

Hi friends, I'm aditya. I am using htc one a9 mobile from the last two years. I updated my htc one a9 mobile to naugat. But, it doesn't look good after the update. I want to degrade the os to stock firmware.
Can you please explain the procedure to degrade htc one a9 to stock firmware

Related

ENG HBOOT for alpharevx S-OFFed phones.

Ladies & Gentlemen,
Here is the ENG HBOOT for any alpharevx S-OFFed saga (Desire S) device.
Enjoy.
How to :
Simply copy the attached file at the root of your sd card
Power off your phone
Remove battery
Replace battery
Hold volume down while powering your phone on
Follow the on-screen instructions.
Please let us know your feedback.
Might i ask what advantages this gives compared to the normal hboot?
fastboot access for flashing radio recovery bootloaders etc.
Exactly.
10 chars.
This one is posted in adv.. weeks ago under development as it should be.
Plz search before you make double posts
Sent from my HTC Desire S
may i know whats the advantage of being ENG HBOOT to PVT HBOOT?? specific advantage or difference?
the attachment dosent seem to work for me...
brokenworm said:
This one is posted in adv.. weeks ago under development as it should be.
Plz search before you make double posts
Sent from my HTC Desire S
Click to expand...
Click to collapse
Try to flash any alpharevx SOFFed HBOOT with the one posted weeks ago...
kartkk said:
the attachment dosent seem to work for me...
Click to expand...
Click to collapse
+1
When I boot with Vol.down + Power it just enters bootloader.
I tried it with both the zip unextracted and the extracted contents of the zip at my SD's root.
What should I do?
xIntenso said:
+1
When I boot with Vol.down + Power it just enters bootloader.
I tried it with both the zip unextracted and the extracted contents of the zip at my SD's root.
What should I do?
Click to expand...
Click to collapse
you need to place the file as it is, PG88IMG.zip case sensitive naming in the root directory of the SD card and then enter bootloader, it will automaticly check for the existence of the file and update....
once updated you should move or rename the PG88IMG.zip otherwise it will re-apply whenever you enter bootloader
If this file is the problem, then I believe that there is another post in the development forum with another copy of the same thing and I know that this works as I used it on my device.
Excellent - worked perfectly.
Thanks a lot!
Sent from my HTC Desire S using XDA App
So can you use this for an s-on device at all do you have to be s-off? Just wondering if I can use this instead of using Alpharev X at all?
Igl0 said:
Exactly.
10 chars.
Click to expand...
Click to collapse
Yeah, it gives exactly 0 advantages over AlphaRevX hboot. That is in essence what we patched in on our HBOOTs as well.
sorry for my noob question
is there any way to make this tips on s-on
iam a new user
It didnt work with my DS i S-off by AlphaRev beta T.T
it worked )
i try by step from [Tutorial] How to restore stock ROM and S-On after AlphaRevX S-Off
1. Put the hboot.img you want to flash in the root of the sdcard.
2. In cmd run the following commands (after each command press enter):
adb devices
adb shell
su
dd if=/dev/block/mmcblk0p18 of=/sdcard/backup.img
dd if=/sdcard/hboot.img of=/dev/block/mmcblk0p18
reboot bootloader
poppy8x said:
it worked )
i try by step from [Tutorial] How to restore stock ROM and S-On after AlphaRevX S-Off
1. Put the hboot.img you want to flash in the root of the sdcard.
2. In cmd run the following commands (after each command press enter):
adb devices
adb shell
su
dd if=/dev/block/mmcblk0p18 of=/sdcard/backup.img
dd if=/sdcard/hboot.img of=/dev/block/mmcblk0p18
reboot bootloader
Click to expand...
Click to collapse
With this guide is work to me before few days.
Igl0 said:
Ladies & Gentlemen,
Here is the ENG HBOOT for any alpharevx S-OFFed saga (Desire S) device.
Enjoy.
How to :
Simply copy the attached file at the root of your sd card
Power off your phone
Remove battery
Replace battery
Hold volume down while powering your phone on
Follow the on-screen instructions.
Please let us know your feedback.
Click to expand...
Click to collapse
Does this work for revolutionary s-off?
Not working
stopping after parsing the file :-(
BUT I'm on http://revolutionary.io/
AND I'v got pb with my HBOOT ( /cache / data unaccessible ... :-( )
helppppppp
Symbiotic_Chemistry said:
Does this work for revolutionary s-off?
Click to expand...
Click to collapse
same question for me.
Thanks !

Downgrading firmware within the same HBOOT

Hi guys,
I was having a chat with beaups the other day and he decided to impart part of his knowledge onto me. All of the below info is Thanks to him.
This is the process i used to downgrade my firmware from 3.17.841.9 to 3.17.841.9 on a Telstra One XL.
Apparently the 3.17.841.9 update placed a write protection on the CID partition, so the only way to gain SuperCID, then S-OFF to install an AOKP Rom is to downgrade.
This will only work if you stay within the same HBOOT versions. 3.17.841.9 and 3.17.841.2 are both on HBOOT 2.14. Both root and SU is needed.
To downgrade to 3.17.841.2, you'll need the ".2" zip, found here https://dl.dropboxusercontent.com/u/9060692/evita3178412.zip
First find the partition # for MISC by opening an adb shell then:
- "su" > to move to a root shell and then typing:
- "cat /proc/emmc" > to find the MISC partition. Mine was mmcblk0p23:
- "echo -ne "1.00.000.0" | dd of=/dev/block/mmcblk0p23 bs=1 seek=160" > Make sure you use what ever you MISC partition is if it's different to 23. That command will alter what firmware version you phone thinks it is. The android OS will still state the old version, so we need to check it in fast boot. therefore reboot the phone to fastboot, wait for "fastboot USB" to show then type:
- "fastboot getvar mainver" > This should show 1.00.000.0. Now we need to flash the 3.17.841.2 zip. Therefore:
- "fastboot oem lock" > to relock the bootloader. Ensure you still have your unlock.bin file to re-unlock it later. Next:
- "fastboot oem rebootRUU" > to reboot the RUU in order to send the zip file. Then:
- "fastboot flash zip evita3178412.zip" > This is where my attempt hit a little snag where i got a "FAILED (remote: 90 hboot pre-update! please flush image again immediately)" error. If that happens, just run rebootRUU and try to flash again. On the third time it worked. After it completes:
- "fastboot reboot" > to reset the phone. Now to check if the flash took:
- "fastboot getvar mainver" > it should say 3.17.841.2 after that.
Now you have a firmware that you can write on the CID partition to gain SuperCID.
In my case, the next steps were to unlock, recovery, root and then supercid.
Unlock > use the "fastboot flash unlocktoken [your unlockcode.bin]" command
Recovery > i used the TWRP http://forum.xda-developers.com/showthread.php?t=1677447
Root > boot into TWRP and install the Super SU (or superuser) zip. I used this one http://forum.xda-developers.com/showthread.php?t=1538053
SuperCID > i first tried this method but then beaups showed me a much better way. Run the following command from a root adb shell:
echo -ne "22222222" | dd of=/dev/block/mmcblk0p5 bs=1 seek=20
Reboot to bootloader and hopefully you'll see 22222222 as your CID
Ooo smart. Editing the file directly rather than pushing and pulling.
Sent from my One X using xda app-developers app
Chances are this won't work for 3.18 at&t right? Lol.... Oh wait.. duh yeah I didn't read it completely. Waist of comment I know. At&t HTC one x only had one update that has hboot 2.14
Sent from my HTC One X using xda app-developers app
Megadoug13 said:
At&t HTC one x only had one update that has hboot 2.14
Click to expand...
Click to collapse
And AT&T phones can't unlock boot loader so can't flash root which is another requirement.
Good write-up Austempest :good:
I did the same, thanks to beaups, who walked me through this the other day as well.
Worked perfect.
beaups also suggested making a full backup prior to flashing the 3.17.841.2 zip., and copy it to your PC just in case.
I found after I had change the CID I had to reload my ROM (Viper from scratch) don't know why, the nandroid did not work very well.
Thanks again, I am now S-off
FSB said:
I found after I had change the CID I had to reload my ROM (Viper from scratch) don't know why, the nandroid did not work very well.
Click to expand...
Click to collapse
I was running a stock Telstra rom, I did the backup but it wasn't needed.
Sent from my HTC One (M7) using the xda-developers app
Austempest said:
SuperCID > i first tried this method but then beaups showed me a much better way. Run the following command from a root adb shell:
echo -ne "22222222" | dd of=/dev/block/mmcblk0p5 bs=1 seek=20
Reboot to bootloader and hopefully you'll see 22222222 as your CID
Click to expand...
Click to collapse
Thanks a million mate for sharing this one, saved me a lot of time and trouble :good:
Austempest said:
To downgrade to 3.17.841.2, you'll need the ".2" zip, found here **evita3178412.zip**
Click to expand...
Click to collapse
Hey would anyone have the .2 zip? Dropbox is 404ing :S Thanks
konradthecat said:
Hey would anyone have the .2 zip? Dropbox is 404ing :S Thanks
Click to expand...
Click to collapse
I am getting this error when trying to flash the OTA zip file
FAILED (remote: 12 signature verify fail)
Ideas?
Cheers.
EDIT: It appears the OTA zip won't work for this, and the source download is missing. Can someone please up the file from OP.
Thanks.
This post has been up for a little over a month and I doubt many have downloaded that file. I would just use the jet tool or pm op.
Sent from my HTC One X using xda app-developers app
It is just firmware.zip from 3.17.841.2 ota. Extract it from the ota and follow the instructions.
Sent from my HTC One XL using xda app-developers app
twistedddx said:
It is just firmware.zip from 3.17.841.2 ota. Extract it from the ota and follow the instructions.
Sent from my HTC One XL using xda app-developers app
Click to expand...
Click to collapse
Good to know. thanks mate
I'll upload it tomorrow for you guys
Sent from my HTC One (M7) using the xda-developers app
twistedddx said:
It is just firmware.zip from 3.17.841.2 ota. Extract it from the ota and follow the instructions.
Click to expand...
Click to collapse
@twistedddx is correct, but if your lazy, I've uploaded it to my dropbox, feel free to use it.
http://db.tt/NVkkNlV9
I got this file from @beaups
twistedddx said:
It is just firmware.zip from 3.17.841.2 ota. Extract it from the ota and follow the instructions.
Click to expand...
Click to collapse
And just in case people get crazy ideas. I would not go flashing random firmware.zip from any ota etc. firmware.zip typically only contains things to be updated. The first Jelly Bean update for each region had a "full" firmware.zip, just like they had a full system image.
Care should be taken with other firmware.zip packages that may be only partial updates, you could brick your phone if you update some parts without updating other parts. Eg applying firmware.zip from 3.17.841.9 could be risky if applied over a 2.40.841.4 phone.
still cant rewrite the CID, even when installing the downgraded firmware, fastboot get mainver shows the correct (downgraded) firmware, but still cannot write that new CID.. any ideas?
Just use jet tool
Sent from my One X using xda app-developers app
thanks guys. this downgrade has saved me a lot of hair pulling!

[DISCUSSION][GUIDE][S4] Liberty MAX - Innovation is Here | Flashing Instructions

This is a general discussion thread for Liberty ROM
Please ask any question you may have and I'll try to answer it as best I can.
Somebody asked for instructions on how to install Liberty ROM and New Firmware so here they are:
Installation of leaked firmware (HBOOT 2.16) and Liberty ROM
WARNING - This WILL wipe your SD Card so back up your files before proceeding
Make sure HTC Sync is REMOVED and drivers are installed. Get drivers: Here
Charge your phone to AT LEAST 60% just in case
If you are S-OFF proceed to step 3, if not continue to step 2.
If your phone is from T-Mobile (US & Germany), Telus or Boost Mobile use Moonshine S-OFF
If you have the international model use: Facepalm S-OFF, Firewater S-OFF or Rumrunner S-OFF (Rumrunner is the easiest in my opinion)
Note that people with the T-Mobile, Telus or BM model CAN use Facepalm, Firewater and Rumrunner as well but international users CANNOT use Moonshine
Now use one of these methods to S-OFF (You cannot proceed if you are S-ON)
Now download the new firmware: Here
Extract the file to a convenient location (Like Desktop)
Open the Install Package folder, press the Shift key, Right-Click while holding Shift and select Open Command Window Here
If your phone is on type:
Code:
adb reboot oem-78
and hit enter
If you are in the bootloader, select Fastboot and type:
Code:
fastboot oem rebootRUU
and hit enter
Now type:
Code:
fastboot flash zip firmware.zip
and hit enter
You should get a message like this: "FAILED (remote: 90 hboot pre-update! please flush image again immediately)". Do not panic just type the command above again.
The green bar on the screen should stop at about 80-90% but do not worry, this is normal.
Now to flash the required recovery type this:
Code:
fastboot flash zip TWRP_2.6.1.0_ville_4.2.2.zip
and hit enter.
Now reboot into the bootloader by typing:
Code:
fastboot reboot-bootloader
and hit enter.
Once in the bootloader select Recovery
When you are in recovery go to Advanced then ADB Sideload
Now you download the ROM: Here. (Latest release is V3)
Now place LIBERTY-S4-Vx.zip into the Install Package folder (The x represents version number, e.g V4
Now open a new command window by holding Shift and Right-Click at the same time and selecting Open Command Window Here
Next you must type:
Code:
adb sideload LIBERTY-S4-V3.zip
and hit enter.
Make sure the screen is on when the sideload is almost 100% complete as TWRP freezes for some reason.
Now follow the instructions in the installer, make sure you select Wipe Data during installation and Reboot when the installation process is finished.
Finished
Alright, I'll try it again here:
Does this ROM enable Bluetooth 4.0 (LE) on the One S?
floppes said:
Alright, I'll try it again here:
Does this ROM enable Bluetooth 4.0 (LE) on the One S?
Click to expand...
Click to collapse
yes it does
Could you maybe post more detailed installation instructions? Do we have to be S-OFF? Should we full wipe before installing?
v3 isnt boot ..
im in hboot 2.16 and soff.
I flash boot_2.16.img and the boot file of v2 again in fastboot and nothing changed
but in v2 it boot like a charm
help
mizutany1996 said:
v3 isnt boot ..
im in hboot 2.16 and soff.
I flash boot_2.16.img and the boot file of v2 again in fastboot and nothing changed
but in v2 it boot like a charm
help
Click to expand...
Click to collapse
Try re downloading the rom
Buembel said:
Could you maybe post more detailed installation instructions? Do we have to be S-OFF? Should we full wipe before installing?
Click to expand...
Click to collapse
hboot 2.16 and liberty rom instructions posted
What are the advantages of sense 5.5 coming from Maximus hd?
Sent from my HTC One S using xda app-developers app
Jeeza said:
What are the advantages of sense 5.5 coming from Maximus hd?
Sent from my HTC One S using xda app-developers app
Click to expand...
Click to collapse
You can change Blinkfeed country location now and possible power drain fixes.
TheEndHK said:
You can change Blinkfeed country location now and possible power drain fixes.
Click to expand...
Click to collapse
What do you mean with "possible"?
Jeeza said:
What do you mean with "possible"?
Click to expand...
Click to collapse
He means that there could be battery drain fixes but he is not sure
i'm on MaximusHD 10.1
twrp 2.6.1.0
hboot 2.16
can i directly flash rom with full wipe ?
yatin kumar said:
i'm on MaximusHD 10.1
twrp 2.6.1.0
hboot 2.16
can i directly flash rom with full wipe ?
Click to expand...
Click to collapse
yes
Jeeza said:
What are the advantages of sense 5.5 coming from Maximus hd?
Sent from my HTC One S using xda app-developers app
Click to expand...
Click to collapse
If I remember correctly in sense 5.5 you can use blinkfeed to reed RSS news instead of only a few selected sources!!
But I haven't used the rom yet so I'm not sure, someone should confirm
What differences from a 4.2.2 rom? Better smoothness? Someone try it?
tommy92tc said:
What differences from a 4.2.2 rom? Better smoothness? Someone try it?
Click to expand...
Click to collapse
so far version 4 is slightly less laggier than v3 but not smooth enough yet and sense 5.5 has new blinkfeed features and some interface tweaks in various apps
Superuser
Hi folks
I used this to install Superuser on Liberty V-5 . Flashed thru recovery. It's for the HTC One M7 but seems to work on ours.
Thanks to @nkk71 for the link.
http://forum.xda-developers.com/showthread.php?t=2506954 Post No# 2
HTC One S
S4
S-off
2.16 Bootloader
TWRP
fgw3987 said:
Hi folks
I used this to install Superuser on Liberty V-5 . Flashed thru recovery. It's for the HTC One M7 but seems to work on ours.
Thanks to @nkk71 for the link.
http://forum.xda-developers.com/showthread.php?t=2506954 Post No# 2
HTC One S
S4
S-off
2.16 Bootloader
TWRP
Click to expand...
Click to collapse
Its for all devices and the latest version download is here: SuperSU v1.94.zip
dd98 said:
This is a general discussion thread for Liberty ROM
Please ask any question you may have and I'll try to answer it as best I can.
Somebody asked for instructions on how to install Liberty ROM and New Firmware so here they are:
Installation of leaked firmware (HBOOT 2.16) and Liberty ROM
WARNING - This WILL wipe your SD Card so back up your files before proceeding
Make sure HTC Sync is REMOVED and drivers are installed. Get drivers: Here
Charge your phone to AT LEAST 60% just in case
If you are S-OFF proceed to step 3, if not continue to step 2.
If your phone is from T-Mobile (US & Germany), Telus or Boost Mobile use Moonshine S-OFF
If you have the international model use: Facepalm S-OFF, Firewater S-OFF or Rumrunner S-OFF (Rumrunner is the easiest in my opinion)
Note that people with the T-Mobile, Telus or BM model CAN use Facepalm, Firewater and Rumrunner as well but international users CANNOT use Moonshine
Now use one of these methods to S-OFF (You cannot proceed if you are S-ON)
Now download the new firmware: Here
Extract the file to a convenient location (Like Desktop)
Open the Install Package folder, press the Shift key, Right-Click while holding Shift and select Open Command Window Here
If your phone is on type:
Code:
adb reboot oem-78
and hit enter
If you are in the bootloader, select Fastboot and type:
Code:
fastboot oem rebootRUU
and hit enter
Now type:
Code:
fastboot flash zip firmware.zip
and hit enter
You should get a message like this: "FAILED (remote: 90 hboot pre-update! please flush image again immediately)". Do not panic just type the command above again.
The green bar on the screen should stop at about 80-90% but do not worry, this is normal.
Now to flash the required recovery type this:
Code:
fastboot flash zip TWRP_2.6.1.0_ville_4.2.2.zip
and hit enter.
Now reboot into the bootloader by typing:
Code:
fastboot reboot-bootloader
and hit enter.
Once in the bootloader select Recovery
When you are in recovery go to Advanced then ADB Sideload
Now you download the ROM: Here. (Latest release is V3)
Now place LIBERTY-S4-Vx.zip into the Install Package folder (The x represents version number, e.g V4
Now open a new command window by holding Shift and Right-Click at the same time and selecting Open Command Window Here
Next you must type:
Code:
adb sideload LIBERTY-S4-V3.zip
and hit enter.
Make sure the screen is on when the sideload is almost 100% complete as TWRP freezes for some reason.
Now follow the instructions in the installer, make sure you select Wipe Data during installation and Reboot when the installation process is finished.
Finished
Click to expand...
Click to collapse
i tried to achieve S-Off with Rumrunner , said ERROR : your are not rooted , although i unlocked my bootloader ! and it says in the prereq : unlocked bootloader OR rooted , not both ... what to do now ? help anybody ?
Hiken_Ace said:
i tried to achieve S-Off with Rumrunner , said ERROR : your are not rooted , although i unlocked my bootloader ! and it says in the prereq : unlocked bootloader OR rooted , not both ... what to do now ? help anybody ?
Click to expand...
Click to collapse
I would root and try again

How To Install Cyanogenmod with S-ON??

Hi,
I have just unlocked my HTC A9, says it's unlocked in bootloader. S-ON is still on and I think it's stopping me from installing TWRP as my recovery image so I cannot flash the Cyanogenmod .zip file. Does anyone know how I can turn S-ON off or where I should go from here, how that the bootloader is unlocked.
Thanks,
Kieran
Go to htcdev.com on your computer and follow the steps to unlock bootloader. Your phone won't be S-off but with the unlocked bootloader you'll be able to fastboot the twrp recovery.
Your phone does not need s-off in order to flash custom recoveries and ROMS, all that you need is an unlocked bootloader
Bull****, you can't flash recoveries or bootloader with "S-ON"
>FAILED (remote: cannot flash this partition in s-on state)
How do you change it to S-OFF?
Jisifus said:
Bull****, you can't flash recoveries or bootloader with "S-ON"
>FAILED (remote: cannot flash this partition in s-on state)
How do you change it to S-OFF?
Click to expand...
Click to collapse
Well that's strange, I'm s-on with twrp 3.0.0.2 and the latest cyanogenmod nightly running
Sent from my HTC One A9 using XDA-Developers mobile app
MGfusion said:
Well that's strange, I'm s-on with twrp 3.0.0.2 and the latest cyanogenmod nightly running
Sent from my HTC One A9 using XDA-Developers mobile app
Click to expand...
Click to collapse
It turns out I was in the white background bootloader, not the download mode, that's why it didn't work. Sorry for the harsh reply, I was getting really inpatient with my device...
Now I can't flash CM13 because my firmware version is 1.64 and it needs to be 1.27. But there is no RUU for 1.64 so I'm completely out of ideas what to do next, jesus christ...
Stuck in bootloop after installing CM13...
I´ve managed to install CM13 & GAppss successfully via TWRP (it says so) but when I reboot the device to start CM, I am trapped in a bootloop
How do I get CM started? For now, I have re-installed the original ROM just by placing it as 2PQ9IMG.zip on the device to get a working device again, but I really want a CM13...
Any hints appreciated - thanks,
Rob
Jisifus said:
It turns out I was in the white background bootloader, not the download mode, that's why it didn't work. Sorry for the harsh reply, I was getting really inpatient with my device...
Now I can't flash CM13 because my firmware version is 1.64 and it needs to be 1.27. But there is no RUU for 1.64 so I'm completely out of ideas what to do next, jesus christ...
Click to expand...
Click to collapse
Haha, no problem... to downgrade I think you have to be s-off, however I'm not really sure on that one
Jisifus said:
It turns out I was in the white background bootloader, not the download mode, that's why it didn't work. Sorry for the harsh reply, I was getting really inpatient with my device...
Now I can't flash CM13 because my firmware version is 1.64 and it needs to be 1.27. But there is no RUU for 1.64 so I'm completely out of ideas what to do next, jesus christ...
Click to expand...
Click to collapse
Sent from my HTC One A9 using XDA-Developers mobile app
Same issue
RobOtter said:
Stuck in bootloop after installing CM13...
I´ve managed to install CM13 & GAppss successfully via TWRP (it says so) but when I reboot the device to start CM, I am trapped in a bootloop
How do I get CM started? For now, I have re-installed the original ROM just by placing it as 2PQ9IMG.zip on the device to get a working device again, but I really want a CM13...
Any hints appreciated - thanks,
Rob
Click to expand...
Click to collapse
I'm in the same situation. You solved?
You have to downgrade to 1.27.xxx.x.
To downgrade you have to say your phone your on 1.10.xxx.x.
enter these commands.
adb shell
echo -ne "1.10.xxx.x\x00\x00" | dd of=/dev/block/mmcblk0p28 bs=1 seek=2208
exit
adb reboot bootloader
then you can flash the signed 1.27 RUU.
after you downgraded you can flash the CM via twrp
worked for me on the .401. edition.
Thank you, but...
Thank you, I've try to downgrade but the operation fail, the message is 7 RU_CID_FAIL cid in android-info mismatched
dav375 said:
You have to downgrade to 1.27.xxx.x.
To downgrade you have to say your phone your on 1.10.xxx.x.
enter these commands.
adb shell
echo -ne "1.10.xxx.x\x00\x00" | dd of=/dev/block/mmcblk0p28 bs=1 seek=2208
exit
adb reboot bootloader
then you can flash the signed 1.27 RUU.
after you downgraded you can flash the CM via twrp
worked for me on the .401. edition.
Click to expand...
Click to collapse
frank531 said:
Thank you, I've try to downgrade but the operation fail, the message is 7 RU_CID_FAIL cid in android-info mismatched
Click to expand...
Click to collapse
seems like you used the wrong ruu for your phone. whats your cid?
I don't know....
Where can I find it? :angel:
dav375 said:
seems like you used the wrong ruu for your phone. whats your cid?
Click to expand...
Click to collapse
frank531 said:
I don't know....
Where can I find it? :angel:
Click to expand...
Click to collapse
fastboot getvar all
in download mode
Ok is the VODAP001 , now I download the right one.
Thank you so much. I hope it works...:good:
dav375 said:
fastboot getvar all
in download mode
Click to expand...
Click to collapse
Not sure if this applies to this thread, but I'm having a similar issue to the first one given. I unlocked the bootloader on my ATT A9, but when I flashed the recoery in download mode and reboot to recovery, it sends me to the stock recovery. Can anyone help?
I've try, but doesn't work...
Afther the adb shell and echo -ne........
this message:
o -ne "1.10.161.7\x00\x00" | dd of=/dev/block/mmcblk0p28 bs=1 seek=2208 <
dd: /dev/block/mmcblk0p28: Permission denied
1|[email protected]_hiaeuhl:/ $
next I've try to flash from the download mode and now the error message says: 19 RU_MAIN_VER_FAIL os-version in android-info missing or i
Maybe the problem is the recovery? Now I have the TWRP not the stock...
I search for a trend for go back to the stock but I haven't found it...
dav375 said:
fastboot getvar all
in download mode
Click to expand...
Click to collapse
frank531 said:
Ok is the VODAP001 , now I download the right one.
Thank you so much. I hope it works...:good:
Click to expand...
Click to collapse
Has it been solved. I seem to have the same issue??
I confirm that downgrading to 1.27 let's you Flash latest CM13.
Does anyone know, what firmware really does? Does it affect security in any way?
dav375 said:
You have to downgrade to 1.27.xxx.x.
To downgrade you have to say your phone your on 1.10.xxx.x.
enter these commands.
adb shell
echo -ne "1.10.xxx.x\x00\x00" | dd of=/dev/block/mmcblk0p28 bs=1 seek=2208
exit
adb reboot bootloader
then you can flash the signed 1.27 RUU.
after you downgraded you can flash the CM via twrp
worked for me on the .401. edition.
Click to expand...
Click to collapse
Is Working! Thanks! But You Forget To Must type "su" but is ok,thank you so much! i save my 25$ to S-off,Thank!

Big help...

First of all ,I want to thank you for your work in the community.It's great.
I have an HTC one SV 4G LTE.It was working very well but one day just stocked and I tried by myself to restore it but to no avail.I have tried all i can to unlock the bootloader but nothing.
These are the characteristics
***Locked***
K2_UL PVT SHIP S-OFF RL
CID-11111111
H BOOT-1.01.0000
Radio- 0.12.40.00.14_2
Open DSP-V7.2.0221.11.23
eMMC-boot
Dec 7 2012,03:10:20:23127
I have tried HTCDev method,adb one but nothing.I don't know what to do......
Please help me.
Thanks
NB:Sorry bot i forgot to say that it's like my OS is wiped because before me somebody tried to do a flash but did not succeed.Sorry once more
Try to flash a RUU (this will wipe all data):
Download this file: https://www.androidfilehost.com/?fid=24369303960683578
Rename the zip file to PL80IMG.zip (make sure it is not named PL80IMG.zip.zip) and copy it in the external sdcard.
Then boot into the bootloader and let the phone recognize the PL80IMG.zip. Confirm to update with vol+ and let it run until its finished.
Thanks a lot.But sorry i forgot to tell you that it's like my OS has been wiped.Somebody else tried to flash it without succeeding.Beside that i've just tried what you told me but it's saying no or wrong image.
What can i do?
You have tried to unlock with htcdev webside and fastboot (not adb) without success?
And RUU is also not working?
Hello, first of all sorry for the delay of my answer.Yes i've tried those methods but my bootloader still mark lock.About adb, i have this systematic answerevice not found.
As i mentionned before it seems like my os have been wiped without backup.
Please help me.........
By the way what are you thinking about viper rom for htc one sv?
You can have a look at this thread: http://forum.xda-developers.com/showthread.php?t=2541843
There is a bootloader unlock for S-off devices without htcdev explained.
But without working adb/fastboot/ruu i don't have hope for your device!
OK.Thanks for everything.Let me go and check and i will give you a feedback
The part of interest of this thread is this one (in an adb shell):
- To unlock:
Code:
echo -ne "HTCU" | dd of=/dev/block/mmcblk0p3 bs=1 seek=33796
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Click to collapse

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