Database Info

Finally unstuck but now autoresets

My phone did not want to boot this morning after swapping SIM-cards twice. Tried many things, including a hard reset, but nothing worked; the phone kept getting stuck in the second boot menu (with the fancy coloured X). When I tried to leave it it took a few minutes but the phone finally booted.
But I lost all settings (not files luckily) and came into an unknown screen. Had to setup a Google account but could not do that before accessing for internet. All these things work again, but when I reboot the phone it seems to reset again and I have to start from this unknown screen again.
Does this sound familiar and what can I do about it?
By the way, the phone currently runs Android 2.3.6 so there are no official updates (right?).

I've been messing around a bit and the "unknown screen" seems to be the new initial Android screen, in which you can setup the phone (Google account etc.). Strangely enough the phone keeps resetting and I cannot change anything. Even formatting, either through Windows or the boot/root menu doesn't help: all files that are on the phone right now are kept. I cannot add new files either.

Liquid_Metal said:
I've been messing around a bit and the "unknown screen" seems to be the new initial Android screen, in which you can setup the phone (Google account etc.). Strangely enough the phone keeps resetting and I cannot change anything. Even formatting, either through Windows or the boot/root menu doesn't help: all files that are on the phone right now are kept. I cannot add new files either.
Click to expand...
Click to collapse
First of all, do you have a Nexus S, or Nexus S 4G? Is your bootloader unlocked? If not then I suggest you follow the guides in the development section. I can't put links due to still being 'new' on here. Find a recovery, flash via fastboot, boot into recovery and flash a rom to your liking. Or you can find some system images and flash via fastboot. I hope this helps. If not, then you can pm me and then I will show you how.

mabry said:
First of all, do you have a Nexus S, or Nexus S 4G? Is your bootloader unlocked? If not then I suggest you follow the guides in the development section. I can't put links due to still being 'new' on here. Find a recovery, flash via fastboot, boot into recovery and flash a rom to your liking. Or you can find some system images and flash via fastboot. I hope this helps. If not, then you can pm me and then I will show you how.
Click to expand...
Click to collapse
Thanks for your reply. I did not unlock the bootloader. I've seen many difficult topics and don't really know where to start.
I just found out that the phone not necessarily resets to a previous state (this morning) but seems unable to write anymore. I just hooked it on to my PC, removed a file, disconnected, and upon reconnection the file was there again (whereas Windows really removed it).

Liquid_Metal said:
Thanks for your reply. I did not unlock the bootloader. I've seen many difficult topics and don't really know where to start.
I just found out that the phone not necessarily resets to a previous state (this morning) but seems unable to write anymore. I just hooked it on to my PC, removed a file, disconnected, and upon reconnection the file was there again (whereas Windows really removed it).
Click to expand...
Click to collapse
I am uploading some files to Dropbox now. Its gonna take a bit. Then I will guide you through, step by step. Sorry for the wait. I know you want to get your phone back up and running. In the meantime, I recommend doing some reasearch here on xda. Don't be afraid of Google, either. Google can be your best friend.
---------- Post added at 02:42 PM ---------- Previous post was at 02:18 PM ----------
Read this. This should help you out.
http://forum.xda-developers.com/showthread.php?t=935819
Read it first. It might come across tricky or hard, but its not... Once you do that to unlock bootloader and root, I would advise you to download either a stock rom, or any others you may feel comfortable with. Look around. There are plenty here on xda.

mabry said:
I am uploading some files to Dropbox now. Its gonna take a bit. Then I will guide you through, step by step. Sorry for the wait. I know you want to get your phone back up and running. In the meantime, I recommend doing some reasearch here on xda. Don't be afraid of Google, either. Google can be your best friend.
---------- Post added at 02:42 PM ---------- Previous post was at 02:18 PM ----------
Read this. This should help you out.
http://forum.xda-developers.com/showthread.php?t=935819
Read it first. It might come across tricky or hard, but its not... Once you do that to unlock bootloader and root, I would advise you to download either a stock rom, or any others you may feel comfortable with. Look around. There are plenty here on xda.
Click to expand...
Click to collapse
Thanks again . A friend of mine was trying to help with bootloading and stuff, but it's somewhat obscure. He said that chances that it's software or hardware are just 50:50.
Got me kinda frustrated yesterday evening but I still have warranty on the phone (have it for half a year now). Problem is that it might be a hassle, because of a conflict between the shop and the provider. But that should work out.
In the meantime it would be nice to try and get it running again.
Strangely enough, the phone drained itself this night. I made a basic install yesterday and left it in standby. This morning, when I checked the phone, it didn't do anything so I thought it finally passed away. Now that it's hooked to my computer it's charging, and it seems to start from 0 (starting with 0 bars of the battery).

Via your link I came to the following guide, which worked partially (cannot link it here).
age tee tee pee ://jaxov.com/2011/02/how-to-root-android-2-3-3-gingerbread-on-nexus-s/
I got up to step 13, where it seems that I cannot find the .zip-file because the phone doesn't store new files...

You can wait for warranty, or you can follow this guide:
http://forum.xda-developers.com/showthread.php?t=947950&highlight=odin
Odin will flash it back to stock without the need to put files on your sd card. Just download the odin files, open up odin, put phone in download mode, and happy flashing. You have to be careful with odin, though. Follow the guide. If you need help, then let me know. I can probably do it remotely for you.

Thanks, I'll try that tomorrow (topic doesn't seem so clear at first glance).

According to this guide, I have to start in Download Mode. I can access this by holding Volume Up + Volume Down and then plugging in the USB cable. It works, but the phone will not be updated and I'm stuck with the "Downloading..." message. Also, Windows Device Manager sees a Gadget Serial, which I cannot update. Google didn't allow for a clear answer (Samsung PC Studio 7 didn't work).
I also think I have an i9023, because it's the European version (which SHOULD be with an LCD screen).
By the way, I just tried formatting through Windows (FAT32) and if still connected the phone indeed seems to be empty. But as soon as I disconnect USB storage all files (on the phone) are back. Nothing special because the problem is very consistent.

Update
Alright, I finally got the drivers properly installed (also to work in Download Mode) and found proper Bootloader/PDA/CSC files (i9023EUR) for Odin and managed to do the flash update (however Odin I used is called I9003_Odin3 v1.82, don't know if that is a problem).
Then I should do a factory wipe, which works (Bootloader -> Recovery -> Wipe), but if I explore the phone I can see that all data is still present (all images, music, etc). So the hard drive still seems fixed.

Please help me out, guys...

Suggestions? Or unfixable and should I send it to be repaired?

I found out that I did not post my last update. I managed to flash with Odin, and I can get into the Bootloader menu to wipe the phone's data. I can, in Recovery Mode, also see the hard drive and it seems to be empty. That is, the phone fails to see it.
When I reboot out of Recovery Mode the phone gets stuck at the Google logo and that's it..

Ok, I will send the phone to be repaired. The phone is now unrooted and does not go further than the Google load screen.

Do you have fastboot? If not then download below.
http://dl.dropbox.com/u/64632729/platform-tools.zip
Extract contents to desktop. Open up a command prompt:
cd Desktop/platform-tools
Put phone in bootloader mode. In command prompt type:
fastboot oem unlock (only if your bootloader is still locked). If its unlocked then download this
http://dl.dropbox.com/u/64632729/recovery-clockwork-5.0.2.0-crespo.img
Put in the platform-tools folder you extracted earlier. Then type in command prompt:
fastboot flash recovery recovery-clockwork-5.0.2.0-crespo.img
Sometimes the flash might say 'fail' if that is the case then just boot the recovery image by typing:
fastboot boot recovery-clockwork-5.0.2.0-crespo.img
Now boot into recovery and flash either a stock rom, stock rooted rom, or whatever your desire is.
This should work. If not, then there has to be a hardware issue with phone and go ahead and send it in for warranty. Let me know if this helps.

Flashing Clockwork did work, but if I understand correctly I have to copy the stock rom to the phone and load it in Recovery Mode? When I connect the phone to my PC it is recognized as an Android Phone (and even as a Nexus S) but the drive it shows up as seems to be recognized as empty ("Please insert a disk into Removable Disk (E.").
So what do I do?
What is sort of promising is that it indeed was capable to flash Clockwork. So the memory is not completely stuck. However, when I do a format, still nothing happens (phone isn't formatted).

Update: I am able to mount the phone to USB and I can access the phone via Windows. However, I can still not format the SD Card (which is of course internal) or put files (stock rom) on it. Are there other tricks to flash a stock rom? If not, it does indeed seem to be that I cannot flash a custom/stock rom because the drive of the Nexus is frozen/broken/whatever.

Officially desperate. Please help. Will pay in form of just about anything.

Hi all,
Here is my sad saga.
Today, I decided I wanted to move up to ICS. I had 2.3.4 on a Koodoo phone that I decided was ready for the brave new world of ICS (bought it off Kijiji, now running it on Rogers which means I have no option of bringing it into a shop).
Ran into some issues but some good folks saved my butt in a number of tough spots. However, my grave seems to have been dug deeper by the minute. Essentially, I have managed to upgrade to 4.0.3. but am stuck with no 3G connection, hence no phone signal. This is a HUGE issue since I require my phone for work (foolish move #1 of the night).
Here are things I have tried and the challenges I have faced thus far:
1) CWM. Have not been able to access it or install it successfully. However have somehow managed to root the device. I did it through a one-click root/CWM tool I found online but have never been able to access CWM from the recovery screen, only stock recovery.
2) Changing the radio baseband version. Fail, since I have no CWM. Or Root Explorer because...
3) I can't access the google Market as I have no data connection. And did I mention no wireless? I live out in a rural area (sad story #1). It's ethernet only, sadly
4) Also, I have very limited access to a PC. I do have one at work, but I have my own macbook. Although I could use the PC at work to try some stuff out, I can't be spending my entire day Googling for help. Seems like employers would frown greatly on it. I've already spent a solid 4 hours on the forums and Internet tonight trying to find something that works. Absolutely no dice.
5) Attempted to get back to 2.3.6. No joy. Phone won't budge from 4.0.3. and I think it has to do a huge part with no CWM.
6) Factory reset a number of times. Still stuck on 4.0.3. with no 3G connection.
7) Reset APNs to default. Still no luck. Perhaps it isn't the radio baseband after all?
8) Also tried entering and leaving airplane mode a number of times. Zero luck.
9) I have a pretty low comfort level with PCs to be honest. I am open to all instructions, as long as they are detailed and written For Dummies.
Please help. I really, truly do not know what else to do or where else to turn but the forums. I've tried everything I could think of and I'm afraid this will impact my job since I need to be in constant phone contact for work. I'm exhausted from stress and worry. I swear this will be the last time I experiment with my phone (I know I've said it before, but this time I MEAN it!)
Thank you all you kind-hearted folk out there for anything you can do to help.

first cell phone model you have and that you had changed baseband before all ... You can also try a new version of CMW in case, can also be kernel problem that uses TO in the mobile ...

So you have a nexus with barely PC access running ics minus a recovery. Good news is your in luck. You need proper tools to do the job. Easiest method is either on that Mac or at work, install the phones drivers. search Google for the fastboot binary for the operating system your using. Once the drivers are installed boot to fast boot not recovery but the screen where you choose recovery. Open a terminal on the PC and type fastboot devices. No period. Should return a serial number on the screen. Your good to go. When you download the fastboot program, put it in a folder on the PC. Also put cwm for your phone in a .img format not a .zip. That should give you a name like cwm-2.5.5.0.img. When you open the terminal, navigate to the folder with both files. After typing fastboot devices and seeing the number type fastboot flash recovery cwm-and-whatever.img
That should give you cwm.
Also you got root have you tried downloading rommanager apk from the net putting it on the sd then installing. Once it installs try to flash recovery from the app
Sent from my Galaxy Nexus using Tapatalk 2

You have to relax first lol. When you're panicky nothing gets done so calm down. Do what the guy above says. Install cwm with fast boot. First install the android sdk then get the drivers. Get fast boot file down as well. Remember that the command fastboot flash whatever varies from operating systems.
With cwm installed, do a test. Backup your efs folder , which is essentially extremely important. You would better do a nandroud backup. Then, try various radios. See if that's your issue. If not change to trying out new roms . Worse case scenario go back to your 2.3.6 rom by flashing with cwm or install cyanogen mod 7.
Best of luck
Sent from my Nexus S using Tapatalk 2

dreamsforgotten said:
So you have a nexus with barely PC access running ics minus a recovery. Good news is your in luck. You need proper tools to do the job. Easiest method is either on that Mac or at work, install the phones drivers. search Google for the fastboot binary for the operating system your using. Once the drivers are installed boot to fast boot not recovery but the screen where you choose recovery. Open a terminal on the PC and type fastboot devices. No period. Should return a serial number on the screen. Your good to go. When you download the fastboot program, put it in a folder on the PC. Also put cwm for your phone in a .img format not a .zip. That should give you a name like cwm-2.5.5.0.img. When you open the terminal, navigate to the folder with both files. After typing fastboot devices and seeing the number type fastboot flash recovery cwm-and-whatever.img
That should give you cwm.
Also you got root have you tried downloading rommanager apk from the net putting it on the sd then installing. Once it installs try to flash recovery from the app
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Follow dreamsforgotten's instructions should get you out of the problem.
And yeah, relax.

You flashed the wrong ROM. the i9020a never got 4.0.3, it went straight from 2.3.6 to 4.0.4. you flashed a ROM for the i9020/i9023. This means that you have a US modem, a problem with those in the gingerbread days is that if you toggled 3G off, you lost it.
Now, I'm not 100% sure this will fix your issue, it *will* bring you back to proper stock image for your phone. Also, keep in mind, that you are responsible for anything you do to your phone, I in no way take any responsibility.
Instructions are for windows
Start by downloading the factory image:
Factory image for your phone
(ref) https://developers.google.com/android/nexus/images
Uncompress this file, you will need the following files:
Image-sojua-imm76d.zip
bootloader-crespo-i9020xxkl1.img
radio-crespo-i9020uckj1.img
Put these all in a folder, you'll need them shortly
Now you need to connect your phone to the computer. follow this guide, part 1 ONLY:
http://forum.xda-developers.com/showthread.php?t=1007782
You should still be in the bootloader when you do the following steps, (turn phone off, press and hold the volume down, power up the phone)
Grab a copy of fastboot.exe and put it in the folder with the IMG files (PM me if you can't find one)
Now, test to make sure your phone is seen by fastboot:
Open a cmd prompt and go to the folder where the img files and fastboot are stored.
Type: fastboot devices
you should get a response like this:
C:\temp\nexus image files>fastboot devices
xxxxxxxxxxxxxxxx fastboot
(x's will be alphanumeric)
This means that fastboot can now see your device. if you get nothing, something went wrong above.. troubleshoot that.
If everything is good, start flashing:
fastboot flash bootloader bootloader-crespo-i9020xxkl1.img
fastboot reboot-bootloader
fastboot flash radio radio-crespo-i9020uckj1.img
fastboot reboot-bootloader
fastboot -w update image-sojua-imm76d.zip
Reboot your phone and be *Very* patient with the first boot.
You should now be good.

Thanks all so very much for all the help! It was extremely helpful and really helped to get my head around things.
What I ended up doing was (for those who might be stuck in the same situation as me):
1) Wipe everything. EVERYTHING. Used fastboot into CWM to help me do that.
2) Put in Kustom Kream found here:
http://forum.xda-developers.com/showthread.php?t=1399956
3) CM9 from here:
http://download.cyanogenmod.com/?type=nightly&device=crespo
* Not super stable to be honest; I've had at least three times where my entire phone randomly shut down and went into the CM9 boot screen and was stuck there until I did a battery pull. Reinstalled each time through CWM. Hope this gets fixed soon!
I found that Kustom Kream put CWM AND rooted my phone AND had everything working in terms of radio bands, sending SMS, etc. I originally had major issues with radios but now I have KB3 although the signal is kind of weak. Maybe because I live in a relatively far out suburban area?
But this solved my problems. Good luck to anyone out there stuck where I am, I feel your pain!

I would recommend that you at least flash a radio that is designed to work with your model - ucjk. That way you won't have any issues if you toggle to 2G.
Sent from my Galaxy Nexus

[Q] botched ROM load, now stuck in recovery hell

I got in a SK4g for my wife intent on upgrading her current phone. I own a 4g myself, and have Rooted/ROM'd it with no issues, we we thought it best to get her the same phone for ease of use/manipulation.
I got the phone in and used superoneclick to root it, then went through the process of putting CWM in place and installing GenericGinger_2.0_SK4G. The process ran smooth as glass (as expected) until it got to reboot. On reboot it hung up on the sidekick screen. After about an hour of waiting I pulled the battery and restarted the machine.
It came back up in recovery mode with the stock recovery (blue) text. Since then I haven't been able to get it to do anything but restart into that recovery screen. Odin doesn't see the phone in download mode and t839-Sidekick4G-UVKG2-One-Click does nothing. It shows it uploading, reboots the phone, and I'm back at the blue text. flashing the bootloaders with One-Click shows success on everything *except* uploading the bootloaders. If I tell it to re-install packages I get a 'cannot validate signature' response. I've tried using android commander to push CWM's recovery file to the phone and get 'permission' denied.
I've done a lot of searching on this site, trying most suggested fixes I've come across with no luck.
what can be done with this phone to get it back in operating condition?
Thanks in advance!

try installing kies odin wouldnt see my phone until i installed it

Kies installed and Odin saw the phone. excellent, thanks!
now, the next issue... lol
I used Odin to push KD1OdinSTOCK onto the phone. it's doing more than it was (going to the initial sidekick screen then dumping to recovery). Now it'll load through the sidekick and samsung splash screens, then reset and do it again. The same thing happens when I tried StockKG2ODIN. I'm using the sk4g.pit that I pulled from this site, could that have anything to do with it/is there another one around that I could try? Anybody have thoughts or ideas on what to do next? I've tried using t839-Sidekick4G-UVKG2-One-Click again, but it nuked the drivers kies put into place and dropped the phone back to what it was doing before.

okay, I did some light reading of this thread here
and followed the directions closely. I also went through sduvick's list of things to do with the following results:
Black screen, no logo.
1. Get into download mode by using VolDown+Touchpad+Power
2. flash full sk4g.tar.md5 as posted.
device will boot through the logo and splash screens, then repeat. note: if I leave the USB cable plugged in on reboot it will go to the battery screen, otherwise it just boot loops.
_________________________________
logo only
1. Download mode
2. Flash full package
device boot loops
_________________________________
Can't flash recovery/boot/sbl
1. Download mode
2. use PIT only, run with repartition checked
3. reboot/reDownload mode
4. run the full image in Odin.
PIT only returns a black screen on the device. running the full image in afterward returns to the boot loop.
_________________________________
Anything else
1. Download mode
2. Full tar.md5 flash in Odin
3. Ask if it doesn't work
okay, so I'm asking...
I'm still able to boot into recovery mode (blue text).
I've noted a bit of strange behavior when trying to boot into download mode. holding vol down + trackball + power does nothing. however, if I plug the phone in while powered down while holding down the trackball it'll boot into download mode, no power or vol down required.

If you can't flash with Odin, you may have a hardware problem.
Judging from your issue with installing Kies, you had a driver problem previously.
Seems that you are bumbling in the dark here. Once again, people need to be better prepared to Odin their devices before they start modding them.
In fact, getting Odin working should be the first thing a person should do with their phone after rooting and installing CWM.
Anyhow, try a different version of Odin. If that doesn't clear up your problem, I suspect some bad blocks in your flash memory are responsible here. It's a dorment issue that would really only be a problem when you flashed the device. If that's the case, you have a new paperweight.
Good luck.

i never could get kd1 to work try kg2
use pit check repartion and place tar file in pda

I don't think the problem is that I can't flash with Odin, but that the device isn't loading the ROM that's flashed. poking around in the filestructure with android commander after a fresh load shows that the system makes it onto the phone.
Speaking of poking around with Android Commander, I've noted that the device is software rooted, but not hardware rooted. the default.class file shows ro.debuggable set at 0 where it should be 1. this is keeping me from just pushing the CWM recovery onto the system and restoring the backup I made before getting into this mess. Anybody want to help me pull/edit/flash the image to change that?
As for a driver issue, that's a good possibility given that the one-click uses a driver set, kies mini uses another, kies has a different one yet and we (as a community) started screwing with the t839's using vibrant drivers. I've got them all. thusfar the only drivers I've found that work with both flavors of Odin I have (1.61 and 1.85) would be those that came with the Kies (thanks for the tip pmp326).
On bumbling in the dark, yes, yes I am. There isn't much of an instruction manual for Odin past what's written here, and 90% of that is 'put your phone in download mode, connect Odin, plug the pit in pit and the tar in PDA make sure only auto-reboot is checked and hit start'. to be honest I haven't had to use the program previously as the stock one-click actually worked on my T839. This new device is being ... difficult.
the dormant bad blocks issue you spoke about, was this something found in new-out-the-box phones? I haven't seen a lot about that in the threads, can you point in at more info, please?
at any rate, it doesn't matter which version of Odin I use, I got the same result from both. I tried using a different cable/different USB port as well. I haven't tried using a different system (yet), but don't want to go through all the trouble of setting up everything on another box. Win7 is finicky enough, trying to get everything operating on Server2k3 would most likely end up a challenge. *lol*
I'll try repartitioning with KG1 when I get back to the house.

Sounds like you are getting far enough to get your device working again to me.
If you can manage to get access to the file system with adb or Android Commander, you may be able to push the rest of the OS files you need directly. This may provide a way to get around your flashing problems.
Try adding the missing files directly with Android Commander.

also i had some troubles a while back while in recovery wipe data and cache turn off phone pull sd card then flash with odin

orange808 said:
Sounds like you are getting far enough to get your device working again to me.
If you can manage to get access to the file system with adb or Android Commander, you may be able to push the rest of the OS files you need directly. This may provide a way to get around your flashing problems.
Try adding the missing files directly with Android Commander.
Click to expand...
Click to collapse
I've gotta pop the debug lock in the default.class to be able to push anything into the system folders with Android Commander. I've found a nice walk-thru to do this, it just requires a little knowledge of c++ and some patience. with any luck I should be able to pull default.class out of its img, edit it and flash that back (most likely with Heimdall since it can do itemized flashing).
pmp326 said:
i never could get kd1 to work try kg2
use pit check repartion and place tar file in pda
Click to expand...
Click to collapse
tried it, no joy.
pmp326 said:
also i had some troubles a while back while in recovery wipe data and cache turn off phone pull sd card then flash with odin
Click to expand...
Click to collapse
tried this, brings me back to the boot loop.

orange808 said:
Sounds like you are getting far enough to get your device working again to me.
If you can manage to get access to the file system with adb or Android Commander, you may be able to push the rest of the OS files you need directly. This may provide a way to get around your flashing problems.
Try adding the missing files directly with Android Commander.
Click to expand...
Click to collapse
currently I'm running into issues with getting ADB to push onto the system as the system is claiming it isn't rooted. Is there a way I haven't read about or found to root the phone without getting into the actual O/S (i.e. from the blue recovery screen)?

If you can get in to CWM Recovery you are fine.
If you cannot, just ODIN to stock.
If you cannot do that, or it doesn't boot after that, try a different PC, os, or drivers (x86 os is usually easier then an x64 os).
If it is still no good, buy a new phone on ebay .
Once booted, Root and install CWM first thing.
Once you are in CWM Recovery...
1) Check mounts (everything should be mounted, and therefore read "unmount [...]")
2) Format EVERYTHING one at a time: cache, data, system, sdcard (optional).
(sdcard should be fine, but to be sure you can format it too after backing it up to PC first and restore what you need after)
(you probably don't need to Wipe and Wipe-Dalvik as they should already be gone, but go ahead and do it anyway)
3) Check mounts again!
4) Install a ROM (must reload it to your sdcard first if you formatted your sdcard)
5) Check mounts one final time before rebooting.
That should ALWAYS work.
NOTE: This was said before: "2. flash full sk4g.tar.md5 as posted.", but that doesn't seem right... you should not be flashing a .md5 file... you need to flash the .tar... the .tar.md5 is just a checksum. (right?)

rpmccormick said:
If you can get in to CWM Recovery you are fine.
If you cannot, just ODIN to stock.
If you cannot do that, or it doesn't boot after that, try a different PC, os, or drivers (x86 os is usually easier then an x64 os).
If it is still no good, buy a new phone on ebay .
Once booted, Root and install CWM first thing.
Once you are in CWM Recovery...
1) Check mounts (everything should be mounted, and therefore read "unmount [...]")
2) Format EVERYTHING one at a time: cache, data, system, sdcard (optional).
(sdcard should be fine, but to be sure you can format it too after backing it up to PC first and restore what you need after)
(you probably don't need to Wipe and Wipe-Dalvik as they should already be gone, but go ahead and do it anyway)
3) Check mounts again!
4) Install a ROM (must reload it to your sdcard first if you formatted your sdcard)
5) Check mounts one final time before rebooting.
That should ALWAYS work.
NOTE: This was said before: "2. flash full sk4g.tar.md5 as posted.", but that doesn't seem right... you should not be flashing a .md5 file... you need to flash the .tar... the .tar.md5 is just a checksum. (right?)
Click to expand...
Click to collapse
Wow... did you even *read* before posting? fail. I mean, thanks for taking the time to write that up and all, but you just repeated everything already said up to this point and included a summary of the ROM for n00bs thread.

Artemis257 said:
Wow... did you even *read* before posting? fail. I mean, thanks for taking the time to write that up and all, but you just repeated everything already said up to this point and included a summary of the ROM for n00bs thread.
Click to expand...
Click to collapse
I like turtles.

Artemis257 said:
Wow... did you even *read* before posting? fail. I mean, thanks for taking the time to write that up and all, but you just repeated everything already said up to this point and included a summary of the ROM for n00bs thread.
Click to expand...
Click to collapse
Even the end... I mean, your not trying to odin a "tar.md5" are you?

rpmccormick said:
Even the end... I mean, your not trying to odin a "tar.md5" are you?
Click to expand...
Click to collapse
No....

Sorry man. I've never had to ODIN (this phone). I say check the md5 to make sure you downloaded a good copy, and maybe try a different USB cable. The ADB method seems nutz... if it doesn't boot after a successful ODIN, the phone is probably a paperweight.
Good luck!

Need help with Samsung Tab 7.7 (SCH-I815LSV)

I'll give you the whole story so bear with me. First off, I'm very new to the Android OS and tinkering with phones and tabs. I'm a computer network administrator and pc mechanic. I'm mainly a hardware guy though, no programming experience at all. But I'm not afraid to jump right into the inner workings though, especially if it's already broken.
And that's probably why I find myself in this position today with this device.
I recently bought this Tab 7.7 to use as a display for my new drone. When it arrived I tried to download the flight control app and it refused to install. No error messages, it just did not install. In looking, the unit was on Honeycomb 3.0. My guess was it was WAY behind in upgrades so off I went to make it bigger and better. I downloaded a zip file for Lollipop 5.1 onto my SD card and was able to load that. Upon reboot I had a screen and an OS. I went into settings and saw where it had upgraded. Success, right? Well, then I went into Wi-Fi settings to add my network. The keyboard would not come up on screen. So I did a bit more research and tripped over the fact that I needed to also load a GAPPS file to add the apps and drivers back. THAT is when I went down the rabbit hole.
The install did not go well and I somehow wound up with no OS at all. Probably after thinking I was following the correct process of resetting and clearing caches before installing the new files. Then this 3 day journey of learning began. I have downloaded Odin, Notepad++ to edit files, Minimal ADB and Fastboot, Samsung KIES and all manners of ROM builds and GAPP files. As of this moment I have absolutely no OS on the unit. Upon turn on it goes directly into the CWM Recovery v6.0.4.5 screen. I am able to boot it to the download screen and Odin can SEE the unit. But I can't get any further with that program other than seeing the unit listed as detected. I'm not able to get anywhere with KIES. No detection or anything.
Now I'm admitting I messed this unit up. I'm not blaming any written procedure or ROM developer. I'm not stupid but evidently don't know all I NEED to know about this process. So I'm here asking for guidance. I really would like to revive this unit and get it back to where I can use it as my monitor as originally planned. But one step at a time. Please give me the correct steps to do to get an OS reloaded and revive this unit.
I'm thinking that my best bet would be to use a TWRP image file to rebuild it. But I need the step by step process for that to make sure I do it correctly.
MANY thanks for this board and the help AOT!!!
Dave

Being the impatient type as well as a DIY'er, I pressed on with trying to revive it myself. I downloaded TWRP as a zip file and added it to the SD card. Booted and installed from the zip file. Screen said it loaded successfully. I rebooted and tried going into recovery (holding power and volume up) expecting it to go into the TWRP console. Instead it went into the regular CWM Recovery screen. Oh well, another frustrating dead end for me. I'll just set it aside until I get some good instructions from someone that knows what they're doing. Best I do that rather than brick it. I can at least access the recovery screen. Odin sees the unit but I cannot find the right file to load from there.

Okay, I'm truly stopping now. Another dead end. I was able to find a couple of files for restore using Odin. Loaded one and now I boot into Android system recovery <3a> instead of the CWM Recovery screen as before. I tried loading a recovery image from a zip file and it failed signature. That seemed to be telling me the tab is now not rooted. So I downloaded SuperSU to the SD card and tried to load it. No joy, it fails signature too.
Arrrggghhhh.........

Can't even shut it down.

Told you I'm impatient. Now have used Odin and installed TWRP 3.0.2-0. Going slowly now. Taking it one step at a time. This is the first positive step I've had so far in 3 days.
:silly:

Baby steps. LOL
Used TWRP to flash SuperSU. Now the unit is rooted and rebooted to TWRP. I still have no OS on there as of yet. I'm guessing my next step is finding a good stable ROM file and use TWRP to flash onto the tab.

Downloaded OmniROM Marshmallow 6.0.1 (https://androidfilehost.com/?w=file...69dc16313bf0332c8794621c6c7f505edf855e0d499d8) and the Open GApps ARM 6.0 stock file (http://opengapps.org/).
Will try to flash those through TWRP and hope for the best.

Joy...at last. The downloaded OMNI 6.0.1 worked when loaded using TWRP. The GApp file failed. Will try another one to see if it works.
https://forum.xda-developers.com/android/software/app-minimal-gapps-gapps-lp-20150107-1-t2997368

Booted to TWRP and was going to install the GApps file. I had left OMNI 6.0.1 on the card too and by mistake selected it. Dooohhh......
I'm an accident waiting for a place to happen. LOL
So, after REloading Android 6.0 I proceeded to load the gapps base file. Reboot and all appears to be going smooth. Apps updating and such. After about 2 minutes I get a message onscreen that unfortunately setup wizard has stopped. Hit okay but the message persists to pop up.
So.....
I guess I'll take a short break then do a wipe and reload of the OMNI and the working gap file and see what happens. At least I got to see it actually boot and let me get into setup. I went to add my Wi-Fi network, added the credentials but it never connected. Something else to look into.
More fun ahead....but at least I'm moving forward now.

A happy camper. Because I was able to revive this tab and because I had the patience to figure it out myself. And my wife swears I have no patience.
LOL
So...the key was downloading Odin and the Samsung drivers on my laptop.
Then download the TWRP.tar file to the laptop.
Boot the tab into download mode by holding power and volume down button. Select yes to continue.
Connect the tab to the laptop with the USB cable. See that Odin can communicate with the tab.
Select AP and find the TWRP file location and start. After it finished, rebooted and since there was no OS installed, TWRP recovery opened.
The next thing was download SuperSU file and drop it onto the SD card. You CAN go ahead and find the correct ROM you want and download the file as well as the GApp file. Drop all 3 onto the SD card.
Then insert it into the tab and select Install. Just be very observant WHICH file you load in what order.
You will need to install the SuperSU, reboot and then install the OS ROM followed by the GApp file.
Select SD card and the SuperSU file. Wait for it to complete then reboot.
After loading SuperSU and reboot, you need to get back into TWRP Recovery program by rebooting while holding power and volume up. This time when you select Install, pick the ROM file first then pick additional files and select the GApp. This way TWRP will first install the OS from the ROM file and immediately load the apps file. Then reboot and you are done!!!
And it took 3 days of round about to figure this out.
LOL
I just downloaded my flight control app and I'm off and running with Marshmallow.
Hope this helps at least one person that is new to this whole process as I was!!!
Dave

LG V20 H918 T-Mobile Guide from out-of-the box --> 20H, TWRP, Root

hi,
this is a guide for real helpless people, that got a V20 H918 T-Mobile out of the box and have no idea
what to do, to get TWRP and root. and since on this phone its a REAL hard odyssee if youre not a pro,
and you dont want to spend days and weeks to pick up countless small puzzlepieces to finally get all together up and running, i decided to write this guide. im no pro myself, but with countless hours of reading and try and error, misery, headaches and brainpain, i managed to get this thing running all right with working downloadmode,
newest TWRP-version and 20H oreo 8.0
so far, everything seems working good. ill play around with this version and if i encounter some crap, i will edit this guide later. sadly most "newbie-guides" here, are from pros for advanced users with decent knowledge. so when u start from zero, you dont understand half of what is written. thats why i will keep this guide as simple as possible, with some side explanations. its a lot to read and a lot to do, but this way works!
what we have before starting:
a V20 H918 t-mobile 20H oreo 8.0 with bootloader locked. simply a crippled standard phone.
what we will have after this guide:
a V20 H918 t-mobile 20H oreo 8.0 rooted, with unlocked bootloader, working downloadmode,
and newest TWRP-version.
with twrp u can backup your whole system "as it is", means u fukk up your phone, simply go to twrp-recovery, restore your backup and you have your phone up and running 100% as before all went down the drain. simply and easy. just like a new installation of win10, but in 5 minutes. u can flash custom roms, kernels etc., install all kind of stuff, no need to pay for apps anymore, get rid of obnoxious bloatware, just 100% freedom and the full potential with the V20 (which is the last phone of its kind with exchangable battery, which is why i got myself 3pcs of it )
sidenote: get yourself some extra protection foils so u can change from time to time.
also get yourself 1 or 2 10000mah powerbatterys from aliexpress (perfine) with protective rubbercase, of course, they dont have the printed-on mah, but at least a considerable amount, so that your phone will last at least 3-6 days. my V10 lastet 11 days normal usage with zerolemon powerbattery. unfortunately, these retards refuse to send to europe, and as far as i know, theyre not producing for LG phones anymore, so aliexpress/perfine is whats left.
the rubbercase gives the phone a superior protection, adds a serious amount of weight and will stick in your hand like glue. it is by far less likely to drop out of your hand like these glass-phones for imbeciles. and if it drops, the rubbercase grants excellent protection. my V10 dropped countless times, still working perfect.
but lets get to the guide now.
at first, we will unlock the bootloader. without it, you wont be able to do anything.
unfortunately, LG produces great phones (with great audio!) but terrorizes the users with their strict anti-root attitude. it seems it gets harder everytime to root and unlock the bootloader. i remember back in the days old samsung devices, had been rooted in no time. this one here cost me about 2 weeks.
on this phone, u simply cant hook it up to the pc, and unlock the bootloader with adb. it will be recognized by the pc, but as soon as u enter fastboot, nothing will happen, no command works.
the solution is a FWUL (forget windows use linux) usb-bootstick, with that u boot your
pc into a custom linux (i think) only here u have full access to your phone via fastboot and can unlock the bootloader in no time. it will not work on win10 !
- first, get rufus, a win10 tool, with that u can create boot-usb-sticks.
https://rufus.akeo.ie/
- then get the linux FWUL image (only 15GB version is still up)
https://androidfilehost.com/?w=files&flid=214529
- unzip the linux image to your c drive or your desktop.
- start rufus and select your usb-stick (it should be 30gb+ in size)
be carefull not to chose any other drive or stick (it will get erased completely), better double check.
- select the image you just unziped. (i use 7zip for unzipping)
- leave all other options as they are, press start. when dialog-box pops up, chose DD-mode !
- now waste some time, as it takes a long time to create the bootstick (in my case about 30min)
- when the stick is ready, in my case it couldnt be recognized anymore in win10, its just a raw-drive, that cant be
opened. thats allright. dont worry
- now close down all applications running and insert the created bootstick. (at this time u might consider using a
separate laptop, so you can follow this guide here at pc and use the laptop with linux running, thats what i did)
restart your pc, hit F2 or F8 oder DEL or whatever to enter bios.
select the created stick as bootpriority nr1. so that the system will use this stick as
the first bootmedium to boot from.
- u get to a screen with 9 bootoptions to chose from. chose the first one. it should now boot into linux.
when password request pops up, enter: linux
- u reach the "desktop"
connect your LG V20 H918 20H via usb-c to the pc, which has linux running, make sure that
developer options are unlocked, OEM-unlock and USB-debugging is enabled and u chose picture transfer protocol
(PTP) as transfer-protocol (also in developer options). if PTP doesnt work, try media transfer protocol.
watch your V20, at some point it will ask for confirmation of connection , click OK.
in linux, click on the up-arrow in the most downleft corner and chose "terminal emulator", which is
a pendant to windows shell/command-line.
- here you can execute the adb commands.
first, check if your V20 has been recognized by your pc with linux running.
type: adb devices
it should appear a message like:
* daemon started successfully *
LGH9182bfblablabla device
that means, that your V20 has been recognized correctly. now you can reboot it in fastboot mode.
type: adb reboot bootloader
your V20 screen goes black and seconds after, it restarts in bootloader mode ready for unlocking.
you might get a red warning that your warranty is void if bootloader is unlocked. cool.
type: fastboot oem unlock
wait for response, your bootloader is now unlocked.
u can check by typing: fastboot getvar unlocked
it should say: yes.
the bootloader is now unlocked.
now we will replace the standard recovery with twrp on the phone.
this step will be a little confusing and complicate, just follow the steps, and it will work.
since we cant flash twrp with adb, we have to use the linux bootstick again.
but before, we have to downgrade the 20H version to 10P, bcuz the next stepp will not work with 20H !
so you get the following:
DOWNLOAD H91810P KDZ FILE
https://androidfilehost.com/?w=files&flid=282709
after that, download LGUP (the LG tool for downgrading from 20H to 10P)
and uppercut (dont know what uppercut is for, i just used it instead of running LGUP directly and it worked. its supposed to recognize the phone/driver automatically)
http://downloads.codefi.re/autoprime...sh_Tools/LGUP/
and download the recent LG-usb drivers.
http://tool.cdn.gdms.lge.com/dn/down...=UW00120120425
install LGUP, uppercut and usb-drivers.
connect ur phone to pc in download mode.
turn of phone, press and hold vol.UP button and connect usb cable, small message appears, phone is now in download-mode and waiting.
now run uppercut and hope, that ur phone will be recognized. if not, think about, what kind of restrictions u did to ur system, like OnO-shutup or xpantispy (both great programs to keep win10 from calling home to scum gates) or whatever. in my case, it ONLY worked, after i reset the OnOshutup settings to recommended. so the phone get recognized correctly in LGUP (if not, try laptop or different pc), select upgrade and select the downloaded 10p KDZ file. press start or go, and wait until the procedure is finished.
now your phone is downgraded to 10p.
now we go back to linux, we connect the phone in downloadmode with the pc/laptop where linux is running,
(turn phone off, hold volUP, connect usb-c-cable with linux-pc/laptop, phone will start in download-mode.)
make sure, your laptop/pc has internetaccess.
on the linux-desktop, click on the LG folder, inside, click on LGLAF runningnaked.
a terminal-window opens.
type: git pull
type: git checkout h918-miscwrte
type: ./step1.sh
now we have flashed twrp onto downloadmode. why? i dont know, thats the way it worked for me.
we dont want twrp onto downloadmode, since twrp is a recovery. so the next step is, to flash the newest twrp version for H918 to recovery. at first, we will gather all neccessary downloads, after that, we will flash them one by one. that way, you dont have to get your micro-sd card out of your phone again and again. we put all together on the card, put the card in your phone and we are almost done. for now, have your micro-sdcard connected
with your pc and download the following:
twrp-3.4.0-1-h918.img
from
https://dl.twrp.me/h918/twrp-3.4.0-1-h918.img.html
and put this .img file on micro-sd card.
then download (and put on sd-card):
MAGISK ZIP DOWNLOAD (for root)
https://github.com/topjohnwu/Magisk/...gisk-v16.0.zip
then download original 20H firmware(and put on sd-card)
H918 20H
https://androidfilehost.com/?fid=11410963190603864639
you remember, we have now twrp on downloadmode
for restoring download-mode, download (keep on desktop or c):
H91820h_00_1115.kdz
https://lg-firmwares.com/downloads-file/17076/H91820h_00_1115
then download the firmware extractor:
https://forum.xda-developers.com/attachment.php?attachmentid=3975633&d=1482337024
ok, lets see what we have now:
we have the phone bootloader unlocked and twrp on downloadmode. we can access twrp when we start the phone in downloadmode (hold volUP, and connect usbcable, phone will start now in twrp.)
we dont want twrp on downloadmode, we want twrp as recovery. and we want to restore the original downloadmode. for that we do the following:
unfortunately, the neccessary file for flashing orignal downloadmode is not online anymore, so we have to extract it from the 20H firmware with the firmware extractor (thanks to logical gamer for his guide)
https://forum.xda-developers.com/v20/how-to/guide-h918-restore-laf-partition-t3804728
Extract WindowsLGFirmwareExtract vx.x.x.x. to your desktop, and open it up (preferably in it's own folder).
u might have to install framework 3.5 for it to run.
Select Open across from KDZ/TOT file, and browse to your KDZ (H91820h_00_1115.kdz)
you download previously and double click.
After it loads the kdz check H91820h00.dz, and click Extract KDZ.
Close and re open the program this time Click open across from DZ File in the folder where you placed WindowsLGFirmwareExtract you should see a file called H91820h00.dz Double click to open it.
Check laf_6.bin then click Extract DZ.
put this laf_6.bin on your micro-sdcard. thats your original downloadmode we will flash now.
ok, now we have our micro-sdcard with twrp, magisk, laf_6.bin and H91820h.zip.
put this mirco-sdcard in your phone. start the phone in downloadmode.
it will start in an older twrp-version. in twrp, go to install and select install img
select the twrp 3.4.0.1. img and on the following screen select "recovery"
swipe
this will flash the 3.4.0.1 version of twrp onto recovery.
then go to reboot into recovery. it will now boot into the newly flashed recovery.
then go to wipe, advanced, and select everything EXCEPT micro-sdcard!
this will totally wipe your phone (except twrp), so u can flash the 20H firmware onto a clean phone.
then, go to install, select H91820h.zip. this will flash your original oreo 8.0 firmware.
after that, go to reboot into recovery.
go to install, select magisk. install.
this will root your phone.
after that, reboot into recovery, go to install, select install img, select the laf_6.bin, and select "download"
now the original downloadmode has been restored.
now you can reboot into system, your phone will start as on day1, with new twrp on recovery and root.
i did a complete backup in twrp, so i can get back to a day0 clean install whenever needed. i will do a second backup with twrp with all the stuff installed and working ok and place this on my sd-card. so when things go bad, i always can go back to this state in no time.
congrats, your done. and me too . gonna get a cold one now.
hope this guide will help someone. in case, just drop a like/thanks/or just a short note.
its a long guide, and im no pro, if i made some mistake pls. tell here and i will correct.
thx to all the pro-guys for helping the helpless.

Hi
Im on v20 H918 firmware 10p with bootloader unlocked.
I tried with dirty cow but not works with lafsploit i have a Problem with rufus for create a bootable Linux.
Pendrive is 32 GB i followed your setting but my PC boot only in windows 7.
I succesfully unlocked a h990ds with dirty santa but for this model is not supported.
Can you help me

hi
i tried with dirtycow also, didnt work.
thats why i eventually came to the method i described.
teling by your short description, your next step would be to create a bootable linux-usb-stick, and to find a pc where it will boot correctly. the stick didnt boot on my main pc ( i dont know why, it just canceled with an error),
thats why i had to use the laptop where it worked.

Thanks for the guide man! Very funny and fun to read. I can't wait to turn mine into a 4-day brick like yours. #lastphonewithbatteryrevolution
Sadly I got the dreaded encrypted error at the end though when booting. Everything else worked fine.
After the encrypted error though I formatted and flashed LineageOS 17.1 and then magisk and still keep getting error 1. Even tried Lineage recovery and still same. I think maybe a problem with Magisk 16 itself.
Anyway it works fine just no root.
Edit: Had to flash Magisk 21 and it worked

Thanks for this tutorial. I was able to get my V20 rooted with minimal trouble. The only major trouble was finding a computer that will fully boot into Linux and the only minor issue was locating the UPPERCUT but I was able to find it. Link below.
It's probably worth mentioning that I had to rename laf_6.bin to laf_6.img in order to flash it in TWRP. Also, at the time of writing, the latest version of Magisk is 22.0 but I used Magisk v21.4 instead because it had a zip file (Magisk-v21.4.zip) available for download so that I can flash it via TWRP. Link below.
UPPERCUT link: UPPERCUT: Add Any LG Device to LGUP for TOT/KDZ Flashing (G4|G5|G6|V10|V20|MORE???) | XDA Developers Forums (xda-developers.com)
MAGISK link: Releases · topjohnwu/Magisk · GitHub

cool, glad this guide helped at least a little bit. my v20 still works great, no issues so far. as a side phone for unwanted persons, i still use my v10 with powerakku and rubbercase "brickstyle" every time i hold a regular phone from other people, it feels weird since these phones weigh like nothing, and i have to focus not to slip it out of my hand. i love my bricks
and by now, about 4 month later, reading this whole guide, to me its still strange and hard to follow. there is no way to get through this without reading everything possible about it and become familiar with all the technical terms.

I have a h918 with an unlocked bootloader and it's downgraded to 10p. The shell script fails everytime to a hash check. I've run it 4 separate times with the hashes being the same every time. So it looks like the file has been updated but the hash hasn't.
I'm coming late to the game and it seems most of the guides are out of date. I'd appreciate any help I can get.
Update: It works fine. This is by far the easiest guide to follow that I've found. Many thanks! I did have to follow xstahsie's tip.
​xstahsie​It's probably worth mentioning that I had to rename laf_6.bin to laf_6.img in order to flash it in TWRP. Also, at the time of writing, the latest version of Magisk is 22.0 but I used Magisk v21.4 instead because it had a zip file (Magisk-v21.4.zip) available for download so that I can flash it via TWRP. Link below.

I followed the guide after I rooted and installed Lineage OS 18.1. I had to remove LineageOS because it was bad with response, couldn't see hidden wifi, and just ran hot. So I followed your guide and I am in a logo bootloop and get the reminder to lock the bootloader everytime it starts. Any suggestions for getting past the bootloop?

I fixed problem by installing LAF you referenced and then LGUP to 10p kdz. However I noticed two things.
1) Whenever I boot up I have the nag message to my bootloader. Any way to address this?
2) If I try to follow steps above to install 20h, I get a decrypt message in TWRP after I flash 20h and before Magisk. Anyone see this? I didn't encrypt my storage before hand.

memnon79 said:
I fixed problem by installing LAF you referenced and then LGUP to 10p kdz. However I noticed two things.
1) Whenever I boot up I have the nag message to my bootloader. Any way to address this?
Click to expand...
Click to collapse
You're stuck with it, it's just the way it will be from now on.
memnon79 said:
2) If I try to follow steps above to install 20h, I get a decrypt message in TWRP after I flash 20h and before Magisk. Anyone see this? I didn't encrypt my storage before hand.
Click to expand...
Click to collapse
I don't remember seeing that. I probably didn't care if it did show up since it was a new install from scratch anyway.

Does encrypting the phone work after following this guide?

hey there, cant help u with the encryption thing cuz thats far beyond my knowledge. some weeks ago my phone dropped, and a tiny crack on the edge appeared. what i didnt know was that this crack is the beginning of the end of the V20. heres the story short: small crack over time leads to a bigger crack, bigger crack multiplies and u have some more cracks covering the whole screen. also the screen can pop off and hanging loose a little. in my case 4-6 weeks and i have to get out phone 2/3 which i am setting up using this guide now. fortunately i left myself a huge pyle of information on how to do this when starting at 0. over time u forget EVERYTHING u have done, so having these infos is hammering.
lucky me did i save my internal memory of phone 1/3 bcuz 30min later the screen was totally fuqqed up, no access no chance of backupping internal memory.
so heres my recommendation:
DONT drop your phone. even in my case with rubber battery case from aliexpress
(perfine "10000"mah) a 50cm drop cracked the edge of the screen. if that happens, backup your internal memory !!! (just do this on a regular base)
when ur screen gets damaged and u cant enter information or cant see anything anymore on the screen ur internal data is lost. so always have ur internal memory backuped!
and great job LG for producing such a huge pyle of ****. one small drop, screen cracked, bravo, last time i ever bought anything from lg. my V10 dropped like a 1000times, nothing, still up and running. v20, drop, 6weeks later, dead. thanks LG the customers all over the world couldnt wait to use these bull**** crackable glass-screens. great job, -1 customer.

I've tried this on two different computers with two different cables in every USB port on the machines but can't get by the Windows portion. I am using UPPERCUT as the windows box/LGUP reports no device found without it...
Of course UPPERCUT drives windows security mad as it's reported as doing bad things but as I'm using an extra win laptop that will be wiped I disable all of that....
I have three different sourced KDZ files as the one linked wasn't initially reporting any mirrors. Eventually a mirror did pop up for it but by then I had downloaded two others -- all were the same size and one of the three reported from LGUP was bad. Every attempt with the other two failed. Invalid Command response came up a few times... sometimes it just failed at around 80+ percent from the PC side which was 99% on the phone's downloader mode progress bar.
It's very frustrating.... I would like to blame windows but there seem to me plenty here with success... any other ideas?

Also... since it got so far, rebooting at this point just goes to the download mode so I might be hosed... I can force it to the fastboot mode and it is still unlocked so I've been trying to install TWRP onto recovery using the linux/android machine but when I type
fastboot flash recovery twrp.img from the directory where twrp was downloaded I get this:
sending recovery --- okay
writing recovery --- failed remote: unknown command
So... any thoughts?

aloha, at which step are u stuck exactly? did u make your phone being recognized by the win10 pc?
one thing to regard is, that a usb-CHARGING cable possibly wont work, u need a designated media/data-cable.
i had this situation before, where using many different usb cables drove me insane bcuz i simply couldnt establish a proper data connection with phone/pc, it just didnt work. it took me many hours until i realized, that all of the cables i tried were charging cables!
for me the most difficult step was having the phone being recognized by the win-pc, the rest went relatively easy.

dikkbutt said:
aloha, at which step are u stuck exactly? did u make your phone being recognized by the win10 pc?
one thing to regard is, that a usb-CHARGING cable possibly wont work, u need a designated media/data-cable.
i had this situation before, where using many different usb cables drove me insane bcuz i simply couldnt establish a proper data connection with phone/pc, it just didnt work. it took me many hours until i realized, that all of the cables i tried were charging cables!
for me the most difficult step was having the phone being recognized by the win-pc, the rest went relatively easy.
Click to expand...
Click to collapse
The phone is recognized by the PC, no problem. I do have to use UPPERCUT to get LGUP to recognize it though. The step I'm stuck at is applying the downgrade. It gets to various percentages of done-ness and fails. It got far enough that now my only options on the phone are Download mode or fastboot mode. Problem is, I can't seem to get anything to push to recovery so I assume that it's still not properly downgraded.
I've tried a few different cables and keep in mind the cable I used in the linux adb bootloader step worked fine. I don't entirely know what difference there is between a charging and data cable but I do know the main differences in the steps are a> Windows and b> size of transfer.

weird. since im no pro myself, my ideas are limited on this one. there might be some kind of loose contact at the charging port,
that when the phone is moved just a little it looses connection for a second and reconnects again, had that in the past, so try not to touch the phone at all. did u use the 10p kdz file mentioned before? did u make sure it has been downloaded correctly?
if an error occured and there are some % missing... its like faulty ram, hard to detect.
assuming, u did or did not downgrade to 10p, did u try to continue with the linux-step? ---->
---------------------------
on the linux-desktop, click on the LG folder, inside, click on LGLAF runningnaked.
a terminal-window opens.
type: git pull
type: git checkout h918-miscwrte
type: ./step1.sh
now we have flashed twrp onto downloadmode
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maybe uppercut/lgup displayed an error message for no reason, and the downgrade itself went through without a problem in the background.
pcs sometimes do weird things.
if nothing works, try setting up win10 and try on a virgin system. in my case, OnOshutup prevented win10 from recognizing the phone,
or try using a 3rd pc from a friend.
i was able to setup my phone 2/3 using this guide in 30min, no problems at all. (i hope i wrote down, how i solved that simlock issue.....)
no matter what causes the problemin ur case , id be interested to hear what it was.

Thanks! Rooted and Unlocked thanks to this guide!

I tried following other guides using UPPERCUT and it fails to downgrade due to Anti Roll Back. How does this relate to this guide since the last thing I want is for (by design) for it to brick the phone. I have yet to find anything specific saying an unlocked bootloader will bypass the anti rollback check.

Hi As a noob does this keep VoLTE? I have followed this guide and backgrade to 10p was perfect! VoLTE working on a phone that was "new" from china. VoLTE did not work on the 20p rom it had. Also does anyone prefer Phoenix591's h918-20g-prerooted rom to the stock one? I have read a lot but am somewhat confused by varying instruction threads. I want to use this as a daily driver. Thanks