Database Users

LG G2-D802 , power on - lg logo - black screen, doesn't boot up.

Hello,
I tried installing custom rom on my G2 , here is what I did (more or less)
- rooted the phone - I think with ioroot
- flashed twrp (I think with flashify)
- couldn't boot into recovery, got "Certificate error"
- used autorec
- now twrp recovery worked.
- wiped data / cache / system
- installed Crdroid / lineageos + gapps
- rebooted
And from that point I'm stuck, I get the LG screen for a sec and then a black screen.
To boot up again I flashed the stock rom, but I want custom!!!
what can I do ?
BTW, in some of the guides I saw it said that I need to unlock the bootloader ? but when I try the guide and use the first command to boot into bootloader, all it seems to do is just reboot the system regularly.
did this "adb reboot bootloader" and that is it, "fastboot oem unlock" just said "Waiting for device"
thank you.

wolfgangam31 said:
Hello,
I tried installing custom rom on my G2 , here is what I did (more or less)
- rooted the phone - I think with ioroot
- flashed twrp (I think with flashify)
- couldn't boot into recovery, got "Certificate error"
- used autorec
- now twrp recovery worked.
- wiped data / cache / system
- installed Crdroid / lineageos + gapps
- rebooted
And from that point I'm stuck, I get the LG screen for a sec and then a black screen.
To boot up again I flashed the stock rom, but I want custom!!!
what can I do ?
BTW, in some of the guides I saw it said that I need to unlock the bootloader ? but when I try the guide and use the first command to boot into bootloader, all it seems to do is just reboot the system regularly.
did this "adb reboot bootloader" and that is it, "fastboot oem unlock" just said "Waiting for device"
thank you.
Click to expand...
Click to collapse
connect it to computer. does it shows qhsusb_bulk in device manager? if qhsusb_bulk mode then use unbrick tutorial or use srktool to unbrick...

Nah.
U just didnt flashned boostack.
Go to twrp (power + vol up)
It will ask u abount factory reset. Press Yes 3 times ( dont worry nothing will be erased).
In twrp do again wipe ( system, data, cache,davlik)
Install caf bootstack. In download select ur variant. (https://forum.xda-developers.com/lg-g2/development/boot-g2-hybrid-bootstacks-t3183219)
Than install rom + gapps.
It should work.

bk2601 said:
Nah.
U just didnt flashned boostack.
Go to twrp (power + vol up)
It will ask u abount factory reset. Press Yes 3 times ( dont worry nothing will be erased).
In twrp do again wipe ( system, data, cache,davlik)
Install caf bootstack. In download select ur variant. (https://forum.xda-developers.com/lg-g2/development/boot-g2-hybrid-bootstacks-t3183219)
Than install rom + gapps.
It should work.
Click to expand...
Click to collapse
This worked! thanks

bk2601 said:
Nah.
U just didnt flashned boostack.
Go to twrp (power + vol up)
It will ask u abount factory reset. Press Yes 3 times ( dont worry nothing will be erased).
In twrp do again wipe ( system, data, cache,davlik)
Install caf bootstack. In download select ur variant. (https://forum.xda-developers.com/lg-g2/development/boot-g2-hybrid-bootstacks-t3183219)
Than install rom + gapps.
It should work.
Click to expand...
Click to collapse
i got the same problem months ago.
it worked fine.:good:

I have the same issue, except I can't get into TWRP. I flashed a bumped stock bootstack and am stuck with the LG logo to black screen. Factory reset screen asks to press power to confirm, just goes back to black screen afterwards. TWRP won't load up no matter the combination. I can get to download mode, if that helps any.

Arak0n said:
I have the same issue, except I can't get into TWRP. I flashed a bumped stock bootstack and am stuck with the LG logo to black screen. Factory reset screen asks to press power to confirm, just goes back to black screen afterwards. TWRP won't load up no matter the combination. I can get to download mode, if that helps any.
Click to expand...
Click to collapse
did you manage to fix this? I'm alsostuck at this, flashing stock rom show skipping partition to me.

I ended up using the download mode to flash a Kitkat kdz with the LG Flashtool 2014, then rooted, flashed TWRP with autorec, then ran mr. bump, installed TWRP 3.1.0, and restored my nandroid backup.

Cant boot into TWRP

Hello, ive unlocked my bootloader on my h870 and ive flashed twrp. when ive just flashed it i was able to boot into twrp but now everytime i try to boot into it it wil wipe all my data with the stock lg recovery mode can someoneone please help me? Thanks! Just got the phone a few hours ago

You have to install a custom rom or root to make twrp permanent, if you don't do that it will install always after the first boot the stock recovery.

mprovi_15 said:
You have to install a custom rom or root to make twrp permanent, if you don't do that it will install always after the first boot the stock recovery.
Click to expand...
Click to collapse
Ok but how can i install root or a custom rom when i cannot boot into twrp?

aaflan88 said:
Ok but how can i install root or a custom rom when i cannot boot into twrp?
Click to expand...
Click to collapse
You need to reflash twrp with the bootloader like the first time.

mprovi_15 said:
You need to reflash twrp with the bootloader like the first time.
Click to expand...
Click to collapse
I understand that mprovi but hen again TWRP doesn't boot unfortunately

aaflan88 said:
I understand that mprovi but hen again TWRP doesn't boot unfortunately
Click to expand...
Click to collapse
When you have flashed twrp, you do the buton combination to enter twrp, if you fail to enter twrp a the phone boots into system the stock recovery will be reflashed so you have to reflash twrp.
Try making these:
When you are in the bootloader after flashing twrp press button down+ power button. When the screen turns off quickly stop pressing power button and quickly press again until the lg logo appear.
When the lg logo appear stop pressing power button, quickly press again and stop pressing the power button and press again quickly until you see twrp logo.
These method works for me for booting twrp easily

The stock recovery appears but you have to select the factory reset option and it will boot into TWRP

mprovi_15 said:
When you have flashed twrp, you do the buton combination to enter twrp, if you fail to enter twrp a the phone boots into system the stock recovery will be reflashed so you have to reflash twrp.
Try making these:
When you are in the bootloader after flashing twrp press button down+ power button. When the screen turns off quickly stop pressing power button and quickly press again until the lg logo appear.
When the lg logo appear stop pressing power button, quickly press again and stop pressing the power button and press again quickly until you see twrp logo.
These method works for me for booting twrp easily
Click to expand...
Click to collapse
Unfortunately still not succeeded after trying all the solutions i've found here

Hey, i have the same Problem, my TWRP broke, i can't boot into recovery and my Device ist not listed in fastboot mode. Can someone help me out?
I get the ring in windows when i plugin but its not recognizing.. Can someone pls help me out?

Okay, I'm going to try to explain it, and see if I can succeed where others have not.
You install TWRP by booting to bootloader and using fastboot to push a new recovery:
Code:
fastboot flash recovery twrp.img
It seems like you accomplished that successfully. The next step is to immediately boot to recovery; do not boot the phone to system first. You will get the factory prompts for wiping data, but it will not actually wipe your data this time. Instead it will boot to TWRP.
Now, while you are in TWRP, you need to either root (flash Magisk) or install a custom ROM. If you do not, your next boot to system will remove TWRP and restore the stock recovery. If that happens, then the data-wiping prompts the next time you boot to recovery are real and the phone will wipe. So you MUST - must must must - root or install a custom ROM while you have TWRP up, in order for TWRP to persist.
If you have already experienced this problem, you need to start over at the beginning; flash TWRP again, and then follow the rest of these directions.
Maybe this will help clear up the problem for you guys.

dwasifar said:
Okay, I'm going to try to explain it, and see if I can succeed where others have not.
You install TWRP by booting to bootloader and using fastboot to push a new recovery:
Code:
fastboot flash recovery twrp.img
It seems like you accomplished that successfully. The next step is to immediately boot to recovery; do not boot the phone to system first. You will get the factory prompts for wiping data, but it will not actually wipe your data this time. Instead it will boot to TWRP.
Now, while you are in TWRP, you need to either root (flash Magisk) or install a custom ROM. If you do not, your next boot to system will remove TWRP and restore the stock recovery. If that happens, then the data-wiping prompts the next time you boot to recovery are real and the phone will wipe. So you MUST - must must must - root or install a custom ROM while you have TWRP up, in order for TWRP to persist.
If you have already experienced this problem, you need to start over at the beginning; flash TWRP again, and then follow the rest of these directions.
Maybe this will help clear up the problem for you guys.
Click to expand...
Click to collapse
Oh my god, i really really thanks for your reply, you're so fre*king good. U made my day.

Guys a little help
I only manage to see the TWRP welcome screen and the the phone automatically reboots to system
I can't get to see the TWRP menu at all!!
WTF is going on?
I have repeated the process many many times and always the same. What i am missing here?!?!?

me too when it boots in twrp only showing logo then it reboots in system what are wedoing wrong?

Got the same problem. I unlocked Bootloader, checked if unlocked (yes). After flashing TWRP i see the TeamWin Screen and phone boot again. There is no TeamWin Menu.
A try with an older TWRP-Version and flashing via fastboot with another PC does not work too.
Anybody an idea?

Did you guys manage to fix it?
Matt.

Hey, for me worked to flash TWRP 3.1.1.0.
3.2.1.0 & 3.2.2.0 still doesn't work.
Greetz

MiR4G3 said:
Hey, for me worked to flash TWRP 3.1.1.0.
3.2.1.0 & 3.2.2.0 still doesn't work.
Greetz
Click to expand...
Click to collapse
With 3.2.1.0, 3.2.2.0 and 3.2.3.0 it only briefly shows the TWRP screen and then boots into system anyway.
With 3.1.1.0 the key combination to boot into TWRP as with the other versions above simply doesn't work, again it directly boots into system without even showing the TWRP screen.
I'm stuck with a resetted phone because of this bull****, because some instructions said "oh, the reset dialog will not really reset your data..." - yeah thanks for nothing, buddy.
So what now?
EDIT: I got it working using TWRP 3.1.1.0, but the same version from the OFFICIAL site didn't work, as I described above.
The only 3.1.1.0 TWRP that works with my phone is the one from this Link: http://downloads.codefi.re/rashed/g6/
(which is linked ... somewhere here in the Forum, don't remember which thread)

Bootloop Recovery

Hello !
I currently have a big problem with my newly acquired G6. The bootloader is unlocked, and the latest version of TWRP is installed. Only every time I want to restart my phone on the flash ROM, it always comes back to TWRP, it never boots on the ROM.
I've tested several ROMs and nothing does, so I don't know what to do anymore: /
Any suggestions for me?
Edit: Actually, it started once under LineageOS, and it was when I wanted to install an OTA that it didn't want to boot at all.

You can try LG UP and flash a stock ROM in order to fix things

solution
Hi,
I had the same problem (seems to be a general bug with the OTA updater of LineageOS).
What helped me on my LG G6, with TWRP 3.2.1-0 and LineageOS 14.1 (12.12.2017 and 23.12.2017 image)
- Turn off phone (from TWRP restart menu).
- boot through the "hard side" into recovery:
-- use power and volume down until the lg logo appears then release power for 1 sec and then repress while keeping volume down pressed.
-- Confirm yes twice on the white screens ("factory reset" - dont worry it does not reset if you already have TWRP installed).
- You are again in TWRP, but now you can reboot to your system through the regular reboot menu.
Solution found here:
https://forum.xda-developers.com/lg-g6/help/help-lg-g6-h870-booting-twrp-install-t3626649

alphablue52 said:
Hi,
I had the same problem (seems to be a general bug with the OTA updater of LineageOS).
What helped me on my LG G6, with TWRP 3.2.1-0 and LineageOS 14.1 (12.12.2017 and 23.12.2017 image)
- Turn off phone (from TWRP restart menu).
- boot through the "hard side" into recovery:
-- use power and volume down until the lg logo appears then release power for 1 sec and then repress while keeping volume down pressed.
-- Confirm yes twice on the white screens ("factory reset" - dont worry it does not reset if you already have TWRP installed).
- You are again in TWRP, but now you can reboot to your system through the regular reboot menu.
Solution found here:
https://forum.xda-developers.com/lg-g6/help/help-lg-g6-h870-booting-twrp-install-t3626649
Click to expand...
Click to collapse
I confirm this actually works

Best way
dd if=/dev/zero of=/dev/block/bootdevice/by-name/misc bs=256 count=1 conv=notrunc

alphablue52 said:
Hi,
I had the same problem (seems to be a general bug with the OTA updater of LineageOS).
What helped me on my LG G6, with TWRP 3.2.1-0 and LineageOS 14.1 (12.12.2017 and 23.12.2017 image)
- Turn off phone (from TWRP restart menu).
- boot through the "hard side" into recovery:
-- use power and volume down until the lg logo appears then release power for 1 sec and then repress while keeping volume down pressed.
-- Confirm yes twice on the white screens ("factory reset" - dont worry it does not reset if you already have TWRP installed).
- You are again in TWRP, but now you can reboot to your system through the regular reboot menu.
Solution found here:
https://forum.xda-developers.com/lg-g6/help/help-lg-g6-h870-booting-twrp-install-t3626649
Click to expand...
Click to collapse
I have tried, just yesterday, and after this procedure I got LG's logo animation bootlooping.
So I restored the last stock rom with uppercut then reinstalled TWRP and Fulmics.
Now it works without any problem.
I had the first bootlooping just after LOS install (no OTA update).

I know the last post was a while ago but this should be easier to find. ty for posting the solution.

Not booting into TWRP

Hey everyone,
I decided to root my lg g6 and got a fickle. After unlocking the device and flashing TWRP I tried to boot into it (''adb reboot recovery'' command) and it deleted all data and then twrp shows on screen for a split second and almost instantly boots normally into android so I set it up while still being unable to access twrp and any of it's functions. Does anyone have any idea what could be the problem?
P.S. Of it helps: before that i had a problem that every time I tried to use the ''adb reboot recovery'' command the console said ''no devices/emulators found''. After a couple tries I wanted to check whether the phone was connected just to make sure (''adb devices'') and after that it worked and I ran into the problem above.
Thanks for all the answers

When you first unlock BL and flash recovery you have to manually enter recovery mode.
Hold power and vol down till it turns off. Hold same buttons again until you see lg logo. Release power and press and hold again.
Then ask you to wipe etc hit yes both times and it will boot to twrp.

I tried that but it still doesn't go into twrp. After confirming that wipe stuff it just boots into android (without wiping)

Ulrih said:
I tried that but it still doesn't go into twrp. After confirming that wipe stuff it just boots into android (without wiping)
Click to expand...
Click to collapse
You have to flash TWRP recovery and when it complete then use the button combo to boot into twrp, otherwise it will boot and restore the recovery.
flash twrp
button combo to twrp
done

Yes I've done that but the problem still exist.
btw thanks for the help

Maybe try fastboot flash recovery recovery.img

Try the all-in-one tool on this forum

By the way, I am running into the same issue.. I have a LG G6 US997,.. I have tried installing TWRP unofficial ones so many times and every time i manually try to access the recovery.. the phone simply wipes all my data to default

Hello,
I have the same problem. Did anyone figure out how to solve it? I'd highly appreciate any help.
If I try to boot into recovery, it asks me to factory reset, i hit yes twice and then the phone just goes on to boot normally. The data is not wiped but I can't get into TWRP.
If I enter "fastboot reboot recovery" after flashing TWRP it returns "fastboot: usage: unknown reboot target recovery"

[FIXED] Lg G6 [H870] TWRP recovery problem

So i wanted to finally install custom ROM on my LG G6 H870, needed twrp... obv, followed all the instructions:
adb devices - showed my device all was good
2nd: adb reboot bootloader
3rd: fastboot flash recovery twrp.img
4th: fastboot reboot + holding volume down and power button, on logo released power button and pressed it down again, finally got to factory data reset 2 YES options and saw the Teamwin bootup logo, but then phone just booted up normally...
5th: Tried to open recovery once more, but then it did regular Data erease.
What could be wrong?

Razexay said:
So i wanted to finally install custom ROM on my LG G6 H870, needed twrp... obv, followed all the instructions:
adb devices - showed my device all was good
2nd: adb reboot bootloader
3rd: fastboot flash recovery twrp.img
4th: fastboot reboot + holding volume down and power button, on logo released power button and pressed it down again, finally got to factory data reset 2 YES options and saw the Teamwin bootup logo, but then phone just booted up normally...
5th: Tried to open recovery once more, but then it did regular Data erease.
What could be wrong?
Click to expand...
Click to collapse
Which TWRP did you flash ? Bootloader unlocked ?

Razexay said:
So i wanted to finally install custom ROM on my LG G6 H870, needed twrp... obv, followed all the instructions:
adb devices - showed my device all was good
2nd: adb reboot bootloader
3rd: fastboot flash recovery twrp.img
4th: fastboot reboot + holding volume down and power button, on logo released power button and pressed it down again, finally got to factory data reset 2 YES options and saw the Teamwin bootup logo, but then phone just booted up normally...
5th: Tried to open recovery once more, but then it did regular Data erease.
What could be wrong?
Click to expand...
Click to collapse
I had exactly same problem when I did this = only Teamwin bootup logo and then boot into android (I hope your bootloader is unlocked first).
Solution was you have to use TWRP 3.1.1-0 and u get into recovery. I tried more versions of TWRP (3.2.1-0 , 3.2.2-0 , 3.2.3-0) but ONLY 3.1.1-0 works and I dont know why.
Anyway I got another issue after because I didn't want to install root yet (first I wanted to backup).
An issue was I got into restarting loop by installing no-verity-opt-encrypt 6.0 which should be a solution for boot into android without losing TWRP (considering to one walkthrough I found).
I was lost for a while but I found a solution = install another boot.img (in my case I installed one dm-verity or dm-verity & forceencrypt zip file - btw what is a difference between them?).

Oh wow.. Well thanks, ill try your solution as soon as i get time. Bootloader is unlocked indeed, used latest twrp. I'll try 3.1.1-0.

@ Razexay
that happened to me also with Official TWRP take that from Eliminater74 that's where backup and encryption work with dm-verity & forceencrypt look here in the forum everything is well described
https://forum.xda-developers.com/lg-g6/development/twrp-t3828254