Develop Bugs

TWRP on LG G4 H811 (T-Mobile US): No Joy :(

Here is what I did:
1) Enable developer mode
2) Enable "allow OEM unlock"
3) Enable USB debugging etc
4) Install PC drivers, run adb, reboot to bootloader
"adb reboot bootloader"​
5) Unlock bootloader
"fastboot OEM unlock"​
6) Restart, device wipes itself and runs OOBE
7) Re-enable USB debugging etc, run TWRP in RAM only
"fastboot boot [TWRP recovery image path/filename]"​
(twrp-3.0.2-0-h811.img)​
8) Use in-RAM copy of TWRP to do nandroid backups of all partitions
Backups complete with no errors.
9) Copy twrp image to device storage
10) Use in-RAM copy of TWRP to flash TWRP image to recovery partition
11) Reboot to recovery to test TWRP install
12) Get broken robot error
13) Restart and run TWRP from RAM again
14) Attempt to restore original recovery image previously backed-up,
restore appears to complete successfully
15) Reboot to recovery
16) Broken robot again.
Any idea what I'm doing wrong??
TIA

read and learn how to unlock your bootloader.

skdubg said:
read and learn how to unlock your bootloader.
Click to expand...
Click to collapse
So I shouldn't believe this message at the top of the screen at every boot?
------------------------------------------------------
Bootloader state : Bootloader unlocked!
------------------------------------------------------
Click to expand...
Click to collapse

thats the right message sorry
have you tested latest twrp beta for h811?

skdubg said:
thats the right message sorry
have you tested latest twrp beta for h811?
Click to expand...
Click to collapse
I downloaded the latest regular one today, I didn't look at any betas. But the restore of the stock recovery didn't work either. Which is pretty disturbing, since that's precisely why I backed-up that partition before making any changes...
Is this kind of thing a known problem?

Bootloader OEM Unlock + Root:
Starting with the Android 6.0 20x bootloader it has to be unlocked, sorta like a Nexus, with fastboot. Previously only 'OEM Unlock' had to be toggled in Android Developer settings for TWRP or custom boot images to work.
1. Flash stock 20x using zip or KDZ. Boot into Android after upgrade to 20x.
2. Download the twrp-2.8.7.1-h811.img file HERE. This file needs to be on your computer and external sdcard*.
3. Download the latest SuperSu zip (2.67+) from HERE [Thanks to Chainfire] and stick on external sdcard*.
4. Confirm "OEM Unlock" is set to enabled in the hidden Developer Settings.
5. Enable "USB Debugging" in Developer Settings, connect USB cable PC <-> Phone... and send the following 3 commands in command prompt/terminal:
Code:
adb reboot bootloader (phone reboots to bootloader)
fastboot oem unlock (this wipes ALL data!!)
fastboot boot twrp-2.8.7.1-h811.img (phone boots TWRP)
6. For perm TWRP: In TWRP hit Install > Images... (bottom right corner) > select TWRP.img on ext sdcard > select "recovery" > swipe.
7. If you want root: Hit the Home button > Install > select SuperSU zip on external sdcard > swipe.
8. All done. Reboot into Android. (if TWRP asks if you want to install SU, HIT NO!!!)
*if you do not have an external sdcard to save SuperSU and the TWRP.img onto.. you will need to skip saving the files to sdcard until AFTER you fastboot OEM unlock and boot into TWRP. After fastboot booting TWRP you can use adb push to put SuperSU and TWRP.img onto the internal sdcard to install with TWRP. Or you can use the MTP mount option in TWRP and drag n' drop the files from the computer to the phone. You cannot store the files on the internal sdcard before the OEM unlock because OEM unlock wipes all you data.
remeber we have antirollback for h811. antirollback V2 is 10n lollipop and 20i MM.
then we have V3 20-o-p-q-and r. once you in wither of the V3 you can not flash a v2 20i or 10n cause youll brick your phone..
this is the procedure when you are in any 20 version

raptorddd said:
Bootloader OEM Unlock + Root:
Starting with the Android 6.0 20x bootloader it has to be unlocked, sorta like a Nexus, with fastboot. Previously only 'OEM Unlock' had to be toggled in Android Developer settings for TWRP or custom boot images to work.
Click to expand...
Click to collapse
Yes, I did both of the unlock steps, they are documented in my OP. And followed all the TWRP docs you copied below with the only difference being I used the latest version of TWRP for the H811 from their website.
[snip]
raptorddd said:
remeber we have antirollback for h811. antirollback V2 is 10n lollipop and 20i MM.
then we have V3 20-o-p-q-and r. once you in wither of the V3 you can not flash a v2 20i or 10n cause youll brick your phone..
this is the procedure when you are in any 20 version
Click to expand...
Click to collapse
Yep, this is useful info as you mentioned to me in another thread. But as I responded a few mins ago there, the device is on the absolute latest build, so anything other than that one (January 2017) would be a rollback to some extent or other.

Exabyter said:
Yes, I did both of the unlock steps, they are documented in my OP. And followed all the TWRP docs you copied below with the only difference being I used the latest version of TWRP for the H811 from their website.
[snip]
Yep, this is useful info as you mentioned to me in another thread. But as I responded a few mins ago there, the device is on the absolute latest build, so anything other than that one (January 2017) would be a rollback to some extent or other.
Click to expand...
Click to collapse
if you flashed 20r you could only downgrade to either 20o-20p-20q- yes but this all V3 including 20r so you be safe to downgrade in all this versions. remeber no 20i or lower.

So I tried to run TWRP 2.8.7.0 from RAM, thinking maybe new versions were based on Nougat or something and didn't know how to flash my device properly.
But it wouldn't launch at all with "fastboot boot twrp2.8.7.0-h811.img" command. Just froze, fastboot no longer saw the device, holding power button down didn't work, had to pull the battery.
So then I tried to just flash 3.0.2-0 the old way ("fastboot flash recovery [image-file]") but it returned a FAILED result.
[command-prompt] fastboot flash recovery twrp-3.0.2-0-h811.img
target reported max download size of 536870912 bytes
sending 'recovery' (33032 KB)...
OKAY [ 1.065s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 1.080s​
Then I verified the bootloader was unlocked:
[command-prompt] fastboot getvar unlocked
unlocked: yes
finished. total time: -0.000s​
Hmm.

It worked by using the in-RAM copy of TWRP to flash, but instead of having the IMG file in the folder I had it in previously (under /download/install) I put it in the root folder and it seemed to like that better.

How to unlock FRP ?

Hi
I was trying to add a custom rom and root my honor 7x.
So i installed a twrp-like recovery (with success), and with that, i sucessfully installed a new ROM.
But now my home folder (/storage/emulated/0) is not writable and seems to be encrypted :/
I cannot do a factory reset or install a new ROM:
- when i go to fastboot mode, i have:
- PHONE Unlocket
- FRP Lock
So i cannot flash anything with fastboot, and my recovery is no more accessible (don't know why...)
My question is, how can i unlock the FRP ?
Thank you very much,
boehm_e

boehm_e said:
Hi
I was trying to add a custom rom and root my honor 7x.
So i installed a twrp-like recovery (with success), and with that, i sucessfully installed a new ROM.
But now my home folder (/storage/emulated/0) is not writable and seems to be encrypted :/
I cannot do a factory reset or install a new ROM:
- when i go to fastboot mode, i have:
- PHONE Unlocket
- FRP Lock
So i cannot flash anything with fastboot, and my recovery is no more accessible (don't know why...)
My question is, how can i unlock the FRP ?
Thank you very much,
boehm_e
Click to expand...
Click to collapse
Look in developer options, the "enable OEM unlock" switch is the "frp lock"
You might already know but I will say anyway just in case.
To boot recovery while phone is rebooting unplug USB and press volume up
To boot from adb use "adb reboot recovery"
From terminal app on phone "reboot recovery"
From powered off, make sure USB in unplugged hold volume up and power

mrmazak said:
Look in developer options, the "enable OEM unlock" switch is the "frp lock"
You might already know but I will say anyway just in case.
To boot recovery while phone is rebooting unplug USB and press volume up
To boot from adb use "adb reboot recovery"
From terminal app on phone "reboot recovery"
From powered off, make sure USB in unplugged hold volume up and power
Click to expand...
Click to collapse
Thank you for your reply.
Yes i know for the oem option in developper mode, but this option is grayed out (and enabled) but the frp is still locked :/
I also know about rebooting to recovery, but this is the default Honor recovery (nothing very usefull).
I tried the dload folder method (by putting an update.app into dload folder of my sdcard and then booting with + and - and power, but the update failes at 5%. It must be because of the frp lock).
Thank you

boehm_e said:
Thank you for your reply.
Yes i know for the oem option in developper mode, but this option is grayed out (and enabled) but the frp is still locked :/
I also know about rebooting to recovery, but this is the default Honor recovery (nothing very usefull).
I tried the dload folder method (by putting an update.app into dload folder of my sdcard and then booting with + and - and power, but the update failes at 5%. It must be because of the frp lock).
Thank you
Click to expand...
Click to collapse
I keep seeing this frp lock issue, comes uP after a reset in twrp or attempted exposed install, some other system change.
Are you on stock ROM and stock recovery?
If so can try to relock bootloader, that will make OEM toggle not greyed anymore. Then can make it off and back on.
Then unlock bootloader again
But only relock if on unchanged stock

I already tried to lock the bootloader again, with no success (probably bcs of the frp lock itself)
:/

Hi
I have same issue too.
How I can relock bootloader and then unlock it?

Question Phone is stuck on fastboot page

Hi,
I attempted to flash ArrowOS for my Poco F3 2 days ago but I didn't follow the steps correctly. My plan was to unlock bootloader, boot twrp and install ArrowOS. After I tried this, the ArrowOS loadup screen kept on loading for a hour. I rebooted the device and ended up in the ArrowOS recovery. After some times, I tried to flash the MIUI fastboot rom with Mi Flash Tool and I think I chose "clean all and lock." This caused a problem because I became stuck on the fastboot page and when I tried to reboot, it would go to the Poco startup page briefly before jumping back to the fastboot. I've tried to hold the power button and the volume keys but it has no effect. Also, on the Poco page there was no unlocked padlock which was weird because when I first tried to flash ArrowOS I could see the unlocked padlock. When I checked on my computer using Mi Unlock, it showed that my device was unlocked.
I think I did manage to flash fastboot rom for MIUI using XiaomiToolV2 because it said that the installation was complete.
Another problem is that when I boot TWRP with fastboot from my computer, there isn't any internal storage shown after I click the install button. I think this is because I wiped the device with TWRP when I was following various tutorials. When I try to add a file to the internal storage from my computer it shows an empty folder and any files I copy into it isn't shown.
I would be really grateful for any help as I've been trying to fix this problem for 2 days now. Thank you!
I've attached a video of the phone being stuck on fastboot.

12839172398 said:
Hi,
I attempted to flash ArrowOS for my Poco F3 2 days ago but I didn't follow the steps correctly. My plan was to unlock bootloader, boot twrp and install ArrowOS. After I tried this, the ArrowOS loadup screen kept on loading for a hour. I rebooted the device and ended up in the ArrowOS recovery. After some times, I tried to flash the MIUI fastboot rom with Mi Flash Tool and I think I chose "clean all and lock." This caused a problem because I became stuck on the fastboot page and when I tried to reboot, it would go to the Poco startup page briefly before jumping back to the fastboot. I've tried to hold the power button and the volume keys but it has no effect. Also, on the Poco page there was no unlocked padlock which was weird because when I first tried to flash ArrowOS I could see the unlocked padlock. When I checked on my computer using Mi Unlock, it showed that my device was unlocked.
I think I did manage to flash fastboot rom for MIUI using XiaomiToolV2 because it said that the installation was complete.
Another problem is that when I boot TWRP with fastboot from my computer, there isn't any internal storage shown after I click the install button. I think this is because I wiped the device with TWRP when I was following various tutorials. When I try to add a file to the internal storage from my computer it shows an empty folder and any files I copy into it isn't shown.
I would be really grateful for any help as I've been trying to fix this problem for 2 days now. Thank you!
I've attached a video of the phone being stuck on fastboot.
Click to expand...
Click to collapse
Well I don't own that phone but it sounds like you didn't unlock the bootloader properly and your internal storage is encrypted that's why it shows 0 and that's probably why your having problems. Is there an encryption disabler zip? Your supposed to format data and flash an encryption disabler and than magisk v23 on Samsung devices than boot.

Okay, so I've just used the Format Data option in TWRP which says it will remove encryption on internal storage. But this didn't seem to fix any problems

12839172398 said:
Okay, so I've just used the Format Data option in TWRP which says it will remove encryption on internal storage. But this didn't seem to fix any problems
Click to expand...
Click to collapse
Did you flash a disabler zip? Also is your bootloader locked?

No, I haven't flashed a disabler zip. Where would I download that. I found a XDA download called Xposed-Disabler-Recovery.zip, would that be it.
My bootloader was unlocked and the Mi Unlock tool still says that it is unlocked, but I don't see an unlocked padlock on the start up page.

12839172398 said:
Okay, so I've just used the Format Data option in TWRP which says it will remove encryption on internal storage. But this didn't seem to fix any problems
Click to expand...
Click to collapse
Did you follow the directions on Xda
INSTALLATION PROCEDURE:
First installation (Clean flash):
You need adb/fastboot tools.
Download boot, vendor_boot and rom zip:
boot_alioth.img
drive.google.com
vendor_boot_alioth.img
drive.google.com
ArrowOS - Downloads
Reboot in fastboot. Flash boot and vendor_boot:
fastboot flash boot_ab boot_alioth.img
fastboot flash vendor_boot_ab vendor_boot_alioth.img
fastboot --set-active=a
Reboot in ArrowOS Recovery:
fastboot reboot recovery
Make format data (Factory reset -> Format data).
Flash ROM (Apply update -> Apply from ADB):
adb sideload name.zip
If you want install separate gapps on vanilla buildtype, after flash ROM:
Advanced -> Reboot to recovery
Flash gapps (Apply update -> Apply from ADB):
adb sideload name.zip
Follow what show on device, should be ... Step 1/2 -> 2/2, then flashing ended, can reboot device in system. (on command line can show "(~47%) adb: failed to read command: No error", it normal!)
________________________________________
Install Update (dirty flash):
Go in Settings -> System -> Updater
Downlad new build -> Install

12839172398 said:
No, I haven't flashed a disabler zip. Where would I download that. I found a XDA download called Xposed-Disabler-Recovery.zip, would that be it.
My bootloader was unlocked and the Mi Unlock tool still says that it is unlocked, but I don't see an unlocked padlock on the start up page.
Click to expand...
Click to collapse
sounds like you have indeed locked your bootloader. you can check using fastboot cmd 'fastboot oem device-info'
if it's locked, only thing to do i would guess is to try and flash stock rom (not EU custom rom) and hope for the best, then try to unlock your bl again

12839172398 said:
No, I haven't flashed a disabler zip. Where would I download that. I found a XDA download called Xposed-Disabler-Recovery.zip, would that be it.
My bootloader was unlocked and the Mi Unlock tool still says that it is unlocked, but I don't see an unlocked padlock on the start up page.
Click to expand...
Click to collapse
Also twrp instructions
Installation:
1. fastboot boot twrp.img
2. copy that same twrp image to the device
3. go to Advanced > Install Recovery Ramdisk
4. select the image you copied
5. after that is done, if you were using a custom kernel, reflash it now
6. if you were using magisk, reflash it now
7. reboot to recovery, you should now be able to boot TWRP normally using Power+volume up
repeat step 3 and 4 directly after flashing a new rom, then reboot recovery to flash additional stuff

also, if your bl is indeed locked i for sure recommend you HALT all attempts at flashing twrp or any custom rom. you need to focus on trying to get stock fw back on the device and booting

WOW! Thank you guys so much for your help! My bootloader was indeed unlocked and I proceeded with the steps by Techguy777 and it worked perfectly! I now have ArrowOS booting up and I cannot thank you guys enough. I hope you have a great day!

Also I haven't installed TWRP; Should I install TWRP? Or is ArrowOS Recovery sufficient

12839172398 said:
Also I haven't installed TWRP; Should I install TWRP? Or is ArrowOS Recovery sufficient
Click to expand...
Click to collapse
Just use arrowos recovery... Doesnt really matter unless u switch around several roms

12839172398 said:
WOW! Thank you guys so much for your help! My bootloader was indeed unlocked and I proceeded with the steps by Techguy777 and it worked perfectly! I now have ArrowOS booting up and I cannot thank you guys enough. I hope you have a great day!
Click to expand...
Click to collapse
enjoy the ArrowOS, it is way better than MIUI. I am loving it since i flashed it 2 days ago!

Wow, if you chose flash and lock like you mention in 1st post and somehow your device remained unlocked, you sir are very lucky!! Glad it's all up and running. Fck knows how it stayed unlocked, but thankfully it did

Question how to go on fastboot mode in oos android 13?

I Have updated my oxygen os and i am now in android 13 but i can't go in fastboot mode now... can anybody guide me how can i go on fastboot mode? i have unlocked my bootloader before updating...

If bootloader/fastboot mode is locked in your version (usually it is locked in beta versions), you can't enter it. If you already unlocked bootloader, you can use fastbootd instead. It may be used i.e. to downgrade to oos 12 where fastboot works.
Use the following command from working oos
Code:
adb reboot fastboot

I am on the same boat I unroot my 9rt but bootloader was unlocked then download the oxygen os 13 stable via op updater app and installed it but every time i reboot my phone it show a msg your bootloader is unlocked device is in orange state can't be trusted reboot in 5 seconds then os boot normally but i can't access recovery or fastboot mode to relock the bootloader.

⭐[ROM][STOCK] 11.0.9.1-GLOBAL-OnePlus7TOxygen_14.O.35_GLO_0350_2206171459-FASTBOOT

Created my own FASTBOOT Rom can anybody test this out, to see if it works please?
Used to "Restore the Firmware" on your phone or when bricked you cannot downgrade or upgrade with FASTBOOT Roms, you must be on the same (Firmware Update Global 11.0.9.1)
Must have Unlocked Bootloader
Backup your data first! It will format your Phone.
Make sure USB debugging is enabled in Developer Settings.
Make sure USB drivers & Bootloader drivers are properly installed
⭐[GUIDE] How to Properly Install OnePlus 7T Official USB Driver & Bootloader Drivers!
Updated 06/03/23 Download OnePlus USB Drivers❗ 1▫️First Disable Driver Signature Enforcement on your PC. 2▫️Press and hold the Shift key on your keyboard and click the Restart button. 3▫️Choose Troubleshoot > Advanced options > Startup...
forum.xda-developers.com
[Instructions Guide]
1Power off your device boot into FASTBOOT mode.
2Then boot into fastbootd mode
Command: reboot fastboot reboot
Click to expand...
Click to collapse
3Extract the 11.0.9.1-GLOBAL-OnePlus7TOxygen_14.O.35_GLO_0350_2206171459-FASTBOOT.rar archive to your desktop. https://mega.nz/file/V6QGyRaC#b9kV4ePP7Z8UFdszRpnZ_xacvp7IArVbEfiemKx7hy4
4Now click on flash-all.bat
5Once flashing process is complete. Go in Recovery Mode and follow this Guideline: English --> Wipe data and cache --> Erase everything.
Then boot into Android
Benefits: Restores Official Firmware Quickly without MSM Tool.