[Q] enabling ADB during bootloop - G2 Q&A, Help & Troubleshooting

I am rooted with custom recovery, stuck on logo screen. I Can get to DL mode, but not recovery to restore my backup. usb debugging is enabled on the device, but its the Verizon version so it needs "Ethernet" connectivity to communicate via adb. so as of now its not communicating. anyway to send reboot recovery command so I can back up? or am I going to have to flash all the way back to stock through KDZ? and if I do that, do I lose root, and recovery, having to start all over?

What do you mean you can't get to recovery?
Sent from my LG D802

Lol. I mean i when I hold volume down and power key sequence it still just boots to lg logo and loops. I can not boot into twrp. Only download mode. What partition is recovery located? I am starting to wonder if I wiped it?

findinghomer said:
Lol. I mean i when I hold volume down and power key sequence it still just boots to lg logo and loops. I can not boot into twrp. Only download mode. What partition is recovery located? I am starting to wonder if I wiped it?
Click to expand...
Click to collapse
Aaand are you sure you released and pressed the keys again when the lg-logo came up? Also you should be able to get to the white lg reset-screen even if you have empty recovery partition.
Sent from my LG D802

Yes, I was. But I guess my timing was bad. I eventually got in, and recovered. Thanks for responding

Related

[Q] Cyanogenmod Stuck in bootloop, Can not boot into recovery.

I have installed CyanogenMod on many devices before, and have never had as many issues as with the LG G2.
I was able to install CWM Recovery, and I used that to backup my existing ROM, and to Install CM-10.2, the build for the vs980.
After installing, and rebooting, I am getting stuck on an infinite boot screen. And I have no idea how to bot into recovery.
The default boot to recovery / factory reset screen is supposed to be, holding the power button until the LG Logo appears, then prelease, and hold again... This does not work, it just goes right back into trying to boot CM.
If I hold Power + Vol+, I enter some Firmware Update screen.
How would one enter CWM Recovery using only hardware? And how can I fix my infinite bootloop?
Any and all help is greatly appreciated.
**Edit**
I found out that I was going into this mode, and not recovery / factory reset... because I was still plugged in via USB... As soon as I unplugged, I was able to do this as expected.
Mod, please delete. I am unable, and I have solved my own problem.

[Q] Verifying recovery mode

I am rooted and my attempt to install TWRP was unsuccessful, the ADB kept failing to keep a connection with the phone.
I want to verify that I can install the ZVA update without an issue. When I try to enter recovery mode it wont work. Tried holding the vol down and power wait for LG logo, release and hold power button until it enters recovery but it just powers down again. Using a different method I did get it into a recovery mode with the android guy and some really small writing with options in the upper left corner. IT says "Android System Recovery <3e>" Is this the factory recovery mode? How can I tell if I have the wrong recovery mode(s)?
bump
3e is stock recovery so I'd say you're good to flash.
Sent from my LG D802
Makrilli said:
3e is stock recovery so I'd say you're good to flash.
Sent from my LG D802
Click to expand...
Click to collapse
Success!

Need help desperately :(

My phone won't boot after installing the latest DU custom rom. I followed the steps here https://plus.google.com/+AlexCruz/posts/JJ5d9v6DArW - rooted and installed latest clockwork mod recovery, did a backup, and wiped everything, then installed the custom rom. But now it is stucked at the Dirty Unicorns boot screen.. Please help.
Some extra info: I was on 4.2.2 (802 international) before the flash
Edit: i can't even get to recovery now, by holding power and volume down buttons at LG logo. Is my phone dead?
catfish90 said:
My phone won't boot after installing the latest DU custom rom. I followed the steps here https://plus.google.com/+AlexCruz/posts/JJ5d9v6DArW - rooted and installed latest clockwork mod recovery, did a backup, and wiped everything, then installed the custom rom. But now it is stucked at the Dirty Unicorns boot screen.. Please help.
Some extra info: I was on 4.2.2 (802 international) before the flash
Edit: i can't even get to recovery now, by holding power and volume down buttons at LG logo. Is my phone dead?
Click to expand...
Click to collapse
Are you getting to the factory hard reset prompt? You have to go through that to get back into the recovery. Then you can just restore from Backup.
catfish90 said:
My phone won't boot after installing the latest DU custom rom. I followed the steps here https://plus.google.com/+AlexCruz/posts/JJ5d9v6DArW - rooted and installed latest clockwork mod recovery, did a backup, and wiped everything, then installed the custom rom. But now it is stucked at the Dirty Unicorns boot screen.. Please help.
Some extra info: I was on 4.2.2 (802 international) before the flash
Edit: i can't even get to recovery now, by holding power and volume down buttons at LG logo. Is my phone dead?
Click to expand...
Click to collapse
i was on stock 4.2.2 i am also stuck... i tried to flash recovery ... now i am stuck at fastboot mode... no recovery no download mode even my pc is detectiing my phone as a usb modem phone adb port... dont know what to do... have no idea if my phone is recoverable or not?
hash.86 said:
i was on stock 4.2.2 i am also stuck... i tried to flash recovery ... now i am stuck at fastboot mode... no recovery no download mode even my pc is detectiing my phone as a usb modem phone adb port... dont know what to do... have no idea if my phone is recoverable or not?
Click to expand...
Click to collapse
--This is copied and paste from another thread--
"You should be able to get to CWM recovery by using the hardware button (power and volume down held down, flash LG logo for a second, and then shuts off--only then you can turn it back on by holding power and volume down together until LG logo pops on, then let go of both buttons quickly, hold down both power and volume down again, and then quickly let go of the volume down button: a white factory reset screen should pop up and then you can push power button alone twice to enter CWM recovery).
If above does not work, you may need to KDZ back to stock using download mode (google LG G2 download mode) and USB cable (the one that comes with the phone as some USB cable won't work as they're charge only cable). You'll have to reroot with IOROOT25 and start over again."
--
I have no idea what fastboot or download mode is but your phone should be soft-bricked? If you can get into recovery or the factory reset screen you should be safe.
I wasn't able to get into the recovery at first but then I kept trying and trying and managed to get in by luck. Lol. I then wiped everything including Dalvik cache in Advanced and rebooted and was relieved to find it booted into Dirty Unicorns. I guess i was lucky.

lg v20 h918 twrp bootloop

so I was having some battery issues and wanted to reset. i for some reason went to settings reset instead of booting to twrp to reset. nonetheless it booted to twrp. I wanted an all the way clean data install so I hit format data and rebooted. now it just keeps booting into twrp. i restored a backup which sys successful but it still goes back to twrp. I can get into fastboot, recoveery. and download mode. I just cant boot into the system.. any help would be appreciated. with no kdz available I dont know what to do..
EDIT FIXED: so apparently you cannot boot to twrp to reset from the factory reset screen on the phone. once I booted to twrp manually and rebooted it started up. really weird.
having same issue with us996 now cant boot to system followed root instructions to factory reset now i cant boot to anything other than twrp whats the button combo and chould u provide detailed instructions please?
Franzferdinan51 said:
having same issue with us996 now cant boot to system followed root instructions to factory reset now i cant boot to anything other than twrp whats the button combo and chould u provide detailed instructions please?
Click to expand...
Click to collapse
Press power and volume down at same time. When lg logo appears realeasw the power button for 1 sec and repress. Then when you get to the all white reset screen press yes and yes again on the next screen. This will get you back into twrp. You might need to reflash the recovery img(not sure, but I did). Restore your backup or whatever and then reboot system. Might have to format data within twrp prior to restore. Think I did that too.
pretty sure im screwed until a rom is released i tried what you said i chouldnt get a white screen to appear still went to twrp directly and it seems i accidently deleted my restore point >< can h918 flash on us996? even though its tmobile?
so i got it booting but it keeps rebooting after a getting to home screen a notification pops up and says android is upgrading when finished it reboots
Franzferdinan51 said:
so i got it booting but it keeps rebooting after a getting to home screen a notification pops up and says android is upgrading when finished it reboots
Click to expand...
Click to collapse
Try factory resetting again maybe
Swizzle82 said:
[SNIP] You might need to reflash the recovery img(not sure, but I did). [/SNIP]
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Click to collapse
For reasons I'll never understand, I ended up in this situation with my H918 after doing an accidental factory reset (tried entering TWRP but TWRP wasn't installed... oops!) and re-rooting. After installing TWRP 3.0.2-1, I was completely unable to boot to system. I tried reflashing various stock partitions and a custom ROM, relocked and unlocked the bootloader a few times, and wiped/formatted/reparitioned the crap out of the poor thing. In the end, the only thing that worked was to flash TWRP a second time. Go figure.
Thanks for being so thorough in describing what you tried on the road to success!
I keep getting sent to twrp. Not sure how to fix it. I can't boot android. Have tried reinstalling roms. nothing working.
when i use button combo to boot into twrp it go to twrp then starts to boot up phone and sits at lg logo after i tried restore a backup. even after factory reset it loads 100% but never boots up
DOBBY0 said:
I keep getting sent to twrp. Not sure how to fix it. I can't boot android. Have tried reinstalling roms. nothing working.
Click to expand...
Click to collapse
follow the instructions from post #3 it worked for me.
Franzferdinan51 said:
having same issue with us996 now cant boot to system followed root instructions to factory reset now i cant boot to anything other than twrp whats the button combo and chould u provide detailed instructions please?
Click to expand...
Click to collapse
since you're having this problem with TWRP , it means you've rooted the phone right?
asking cz i'm looking to get the LG V20 but don't know about the risk of it bootlooping itself, without rooting or anything like that, like it used
to happen on lg g4 and g3.
Thank you
maybe https://forum.xda-developers.com/v20/help/lg-v20-access-to-fastboot-t3557328
You most likely don't need to go through all of those hoops in the link above.
Have you tried power on and volume down to go through the factory reset screens.
A bunch of us had this problem and it was because an update downloaded on it's own and the bootloader snoops it out and forces recovery to boot.
Just do the volume down + power button - as soon as you see the lg logo release power only then immediately re-press power and continue holding power and volume down until the factory reset screen pops up. Select yes and yes, (don't worry - if you have twrp recovery it can't reset). It will boot you into TWRP and I'm pretty sure it will delete the update files in fota folder.
In TWRP select reboot - system and it should boot normally like nothing happened.
Swizzle82 said:
Press power and volume down at same time. When lg logo appears realeasw the power button for 1 sec and repress. Then when you get to the all white reset screen press yes and yes again on the next screen. This will get you back into twrp. You might need to reflash the recovery img(not sure, but I did). Restore your backup or whatever and then reboot system. Might have to format data within twrp prior to restore. Think I did that too.
Click to expand...
Click to collapse
I ran into this issue and did as you wrote to re-flash Lineage 14 and it WORKED! Took me hours to get to this post, but after some searching around i'm so relieved and so much less frustrated! Thank you for your input!

HELP Soft Bricked A2017U

The issue I am having is that I wanted to set my phone back to factory, after I relocked the bootloader my phone when booting(with or without the volume keys) would shut off right after showing the ZTE boot screen. Now when I connect it, it shows up as HS-USB QDLoader 9008 (COM5)..
Ive been looking at these two forums similar to my problem:
https://forum.xda-developers.com/axon-7/help/bricked-a2017u-t3573798
https://forum.xda-developers.com/axon-7/help/a2017g-totally-bricked-t3537990
I understand I should use the axon7tool(When I try "axon7tool -r boot" i get failed to connect) , but I dont know exactly what I am doing.. I apologize for me being so dumb about this but if someone could please spell out exactly what I would have to do, to get my phone back to factory settings. Any help would be greatly appreciated.
RECAP: Bootloader locked, shows up as HS-USB QDLoader 9008 (COM5), It did have TWRP.
EDIT: When trying MiFlash, I get a ERROR_BAD_FORMAT 0
I just did the exact same thing you did and had the same issue. What worked for me was downloading the factory image from ZTE, putting it on an SD card, going into stock recovery (vol up + power) and select apply update from sd card. The file you download from ZTE is double zipped, so make sure to extract the update.zip file from the parent zip before you put it on the SD card. It will be in a folder with the same parent zip name. I no longer can boot into bootloader from stock recovery (not sure if that's normal), but at least my phone works again. Here's the link.
https://www.zteusa.com/axon-7#support
Hope this helps.
EDIT: I also had TWRP when I locked my bootloader, so I'm assuming you're able to get to stock recovery with volume up + power.
Doesnt let me boot into anything.. Not sure how I screwed it up this badly. Im trying a MiFlash method right now to see if it helps
what happens when you hold down volume up and power button at the same time? you should feel a vibrate and when you let go, you should see the stock recovery.
No, Just shuts off after the ZTE logo pops up
The phone might still be on at that point. When the ZTE logo would pop up for a split second for me, MiFlash was able to see the phone. What happens when you just hold the power button for about 10 seconds right after the screen goes off? Does it stay off?
I believe you are right, when the logo isnt up(after it disappears) that is when it connects as the COM5 otherwise when the logo pops up it disconnects the resumes the cycle.
so if I hold it, it just keeps showing the ZTE logo then shutting off
Just to clarify, holding down both the volume up and power button simultaneously at the same time for at least 3-5 seconds after the phone is off (not after the screen goes blank after the ZTE logo) still gives the same result as if you just pressed the power button?
Yes.
If MiFlash can see the phone, maybe you can unlock the bootloader again?
exact same problem as you, except MiFlash successfully flashes B19 but it still doesn't boot
What you need is FLASH stock recovery in EDL Mode.
That will fix your problem..
P.S. as soon you boot your device after Flashing stock recovery ,will perform a factory reset.
DrakenFX said:
What you need is FLASH stock recovery in EDL Mode.
That will fix your problem..
P.S. as soon you boot your device after Flashing stock recovery ,will perform a factory reset.
Click to expand...
Click to collapse
I'm on stock recovery but I still get stuck on ZTE logo
Fazedyrus said:
I'm on stock recovery but I still get stuck on ZTE logo
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Click to collapse
You should download YOUR variant SDCARD UPDATE zip and flash using stock recovery.
DrakenFX said:
You should download YOUR variant SDCARD UPDATE zip and flash using stock recovery.
Click to expand...
Click to collapse
"E:failed to map file, Installation Aborted"
I have not tried to flash a redownloaded version of B15 because I cannot move the file onto my sd card. I was able to flash a signed twrp on locked bootloader before to enable MTP, but whenever I flash a signed twrp now, I just get stuck on zte screen. Why is this phone so inconsistent?

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