Hi,
I did a TWRP wipe (everything checked) to prepare for a restore to stock, but my device is now stuck at the very first "Google" screen with the pad lock icon at the bottom. How do I get it to boot?
goister said:
Hi,
I did a TWRP wipe (everything checked) to prepare for a restore to stock, but my device is now stuck at the very first "Google" screen with the pad lock icon at the bottom. How do I get it to boot?
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Click to collapse
So since everything was checked, that means you wiped the system partition. The device will not boot if you do that unless you flash a factory image via fastboot or new ROM via TWRP
OK, I thought wiping /system would just bring it back to factory state. 2 questions now
1. How do I get to recovery when it's always stuck at the Google screen with no adb access? Would I have to wait for the battery to run out (hence turn off), charge it for a while, then use the buttons to boot to recovery, or is there a faster way?
2. I am actually trying to revert to stock ROM (downloaded at https://developers.google.com/android/images#angler) by following step 10 of the Heisenburg guide (https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928) which advises me to use fastboot to flash the individual images. In my case, how do I boot to fastboot?
OK, so I managed to boot to the bootloader and run the following commands as per the Heisenberg guide (using the stock MTC20L firmware)
Code:
fastboot flash bootloader C:\angler\images\bootloader-angler-angler-xx.xx.img
fastboot reboot-bootloader
fastboot flash radio C:\angler\images\radio-angler-angler-xx.xx.img
fastboot reboot-bootloader
fastboot flash boot C:\angler\images\boot.img
fastboot erase cache
(above command is unnecessary on Android 7.1.2 and above)
fastboot flash cache C:\angler\images\cache.img
(above command is unnecessary on Android 7.1.2 and above)
fastboot flash recovery C:\angler\images\recovery.img
fastboot flash system C:\angler\images\system.img
fastboot flash vendor C:\angler\images\vendor.img
Everything was successful, and I did a fastboot reboot after that.
However, my device still doesn't boot up. This time. It's boot loops for a few times before turning off.
I tried booting up to bootloader with power/vol-. Curiously, I can now only do this when cable is connected. If cable is disconnected, the orange LED just blinks once when power button is pressed, and nothing happens. Once cable is connected, then I'm able to boot up to bootloader with the button combination. I then retried the flash process again, but still no go. I noticed after fastboot reboot that the orange LED blinked a few times before rebooting and boot looping.
Kinda stuck now, any ideas?
Try booting into recovery and doing a factory reset. I've had that happen to me a few times after flashing factory images and a wipe in recovery always fixed it.
Just for future information: if at any time the device is stuck in a bootloop you can get it to robot into recovery by holding the power and volume down buttons for 10 seconds, or get it to boot into bootloader by holding power and volume up buttons for 10 seconds.
Face_Plant said:
Try booting into recovery and doing a factory reset. I've had that happen to me a few times after flashing factory images and a wipe in recovery always fixed it.
Just for future information: if at any time the device is stuck in a bootloop you can get it to robot into recovery by holding the power and volume down buttons for 10 seconds, or get it to boot into bootloader by holding power and volume up buttons for 10 seconds.
Click to expand...
Click to collapse
Thanks. Booting into stock recovery shows an exclamation sign with "no command", since I don't have TWRP anymore. Would I need to first flash TWRP before I can do a factory reset?
I just tried flashing to the same sock firmware as before the problem happened (7.1.2 N2G47W) but still same problem. I notice that after the Google logo disappears and the screen goes blank, the orange LED blinks 10 times before rebooting.
Edit: Tried factory resetting in stock recovery (by holding down power button and pressing vol+), the rebooting after factory reset. Still getting a boot loop.
OK I solved the problem. Apparently if you reboot after the flash, you need to disconnect the USB cable, else it will boot loop.
OK I solved the problem. Apparently if you reboot after the flash, you need to disconnect the USB cable, else it will boot loop.
goister said:
OK I solved the problem. Apparently if you reboot after the flash, you need to disconnect the USB cable, else it will boot loop.
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Click to collapse
brother help me! i am facing same issue
first little info abt my device.
my device was running on android nougat with twrp recovery installed but the device was not rooted.
so get back to stock and install oreo I followed every step given on http://www.androidexplained.com/nexus-6p-revert-stock/ but somehow my phone is stuck at bootloop with no recovery installed.
Please help me here.
As per the Heisenberg guide, if you don't install root (SuperSU or Magisk), TWRP won't stick, so you'll go back to stock recovery.
For me, simply unplugging the USB cable after rebooting after a flash solved my problem. For some reason, if the cable is connected during reboot, it would boot loop.
brother, somehow I managed to install twrp. but everytime I touch it 2-3 times the phone gets switched off.
then it keeps rebooting to 'Google' logo.
can you tell me what should I do now?
@goister Hi how you manage to get to recovery when it's always stuck at the Google screen with no adb access. Please I am stuck there
tommast said:
@goister Hi how you manage to get to recovery when it's always stuck at the Google screen with no adb access. Please I am stuck there
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hi, did youmanage to solve this problem? I am aving the exct same problem. Disconnecting the ucb isnt working for me
Related
While using the PA Updater app to upgrade my rom, the app attempted to reboot into recovery to run an openrecovery script. While doing this, I believe it set my "reboot mode flag" to recovery.
The tablet boots with the Google screen and then shows the TWRP splash (I'm on version 2.6.0.0), then it reboots and starts again.
I am able to get to the bootloader, but even if I press start or recovery mode it reenters the boot loop trying to get into recovery. In the bootloader was where I saw the reboot mode flag set to recovery. Is there a way to use fastboot to remove that or am I just going to have to do a wipe with fastboot?
It happened to me once. I pushed the power button for 60 seconds as it supposed to do a kind of battery pull, and it worked.
HunterOrHunted said:
While using the PA Updater app to upgrade my rom, the app attempted to reboot into recovery to run an openrecovery script. While doing this, I believe it set my "reboot mode flag" to recovery.
The tablet boots with the Google screen and then shows the TWRP splash (I'm on version 2.6.0.0), then it reboots and starts again.
I am able to get to the bootloader, but even if I press start or recovery mode it reenters the boot loop trying to get into recovery. In the bootloader was where I saw the reboot mode flag set to recovery. Is there a way to use fastboot to remove that or am I just going to have to do a wipe with fastboot?
Click to expand...
Click to collapse
same thing just happened to me... tried Factory Reset and TWRP ran an Open Recovery Script and boom... boot loop... TWRP screen pops up and then goes to loop...
tried pressing powerbutton but no use...
any workaround for this???
Lordificated said:
same thing just happened to me... tried Factory Reset and TWRP ran an Open Recovery Script and boom... boot loop... TWRP screen pops up and then goes to loop...
tried pressing powerbutton but no use...
any workaround for this???
Click to expand...
Click to collapse
I've done this twice to my nexus now and I think I found a reliable way to restore to running condition. YMMV
1)Boot the nexus into fastboot (power and both volume keys) when you power up.
2)Attach your usb cable from the PC (or MAC I guess, dont have one to try)
3)start WUG Nexxus Root Toolkit. 'Launch' advanced utilities.
4)Test your fastboot with Quick tools. check the button at Fastboot-Bootloader and click 'List Devices' if the box that pops up is empty then fastboot isn't working (I can't help you there and it must be working to continue).
5)If fastboot shows a device then go to "Boot Temporary" and click 'Custom Recovery'.
6)I selected 'Touch TWRP' but CMW may work as well. This will reboot you into (temp)TWRP and from there you can force a reboot that will reset the 'Recovery' flag that has locked your bootloader.
7)Give it a few minutes (be patient for 5 minutes) and hopefully you reboot to where you were prior to this mess.
Long time lurker and couldn't fix my fails without everyone here.
Thanks to all.
Bill
HunterOrHunted said:
While using the PA Updater app to upgrade my rom, the app attempted to reboot into recovery to run an openrecovery script. While doing this, I believe it set my "reboot mode flag" to recovery.
The tablet boots with the Google screen and then shows the TWRP splash (I'm on version 2.6.0.0), then it reboots and starts again.
I am able to get to the bootloader, but even if I press start or recovery mode it reenters the boot loop trying to get into recovery. In the bootloader was where I saw the reboot mode flag set to recovery. Is there a way to use fastboot to remove that or am I just going to have to do a wipe with fastboot?
Click to expand...
Click to collapse
I had the same thing happen to me (though i updated from stock 4.4 to 4.4.2 [and i had twrp installed]). I tried reflashing to stock recovery and a few other things but same problem, it kept booting me into stock recovery. I know this is going to sound crazy, even stupid, but just letting it sit there for 5 minutes (at the stock recovery screen) let it work... I was searching for more things to try and it just started booting.... Checking the bootloader again showed the reboot mode flag set to none.
zeroedout420 said:
I had the same thing happen to me (though i updated from stock 4.4 to 4.4.2 [and i had twrp installed]). I tried reflashing to stock recovery and a few other things but same problem, it kept booting me into stock recovery. I know this is going to sound crazy, even stupid, but just letting it sit there for 5 minutes (at the stock recovery screen) let it work... I was searching for more things to try and it just started booting.... Checking the bootloader again showed the reboot mode flag set to none.
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Click to collapse
I guess mine worked because I was still on stock bootloader and adding TWRP was an important key but the 5 minutes seems to be the solution after all the rest.
recovery boot loop:- Is coz, one of your partitions would be facing problems while mounting.. So Wipe the Partition and Format it with Ext-2 file format. and reboot the Mobile. Then it'll stops rebooting.
Do you have a Samsung device?
Be warned - there is no such thing as fastboot mode for most Samsung Galaxy devices - you'll be wasting your time doing this and typing "fastboot devices" for many hours!
If you have problems with your recovery, it works to just reflash the CF-autoroot kit, which happens to flash the cache partition too. My problem was similar to the OP's - a bootloop with TWRP's obviously buggy OpenRecoveryScript, which was installing a ZIP file over and over again.
If you flash the CF-autoroot specific to your device, TWRP will be gone, but the phone will boot normally again - with all your data on it - hooray!
Then you install TWRP or CWM recovery as you did originally.
Stay away from OpenRecoveryScripts! I'll be installing a ZIP file in the traditional, manual way from now on, from an external SD card so I can remove the card if I get another TWRP boot loop.
carltasmania said:
Be warned - there is no such thing as fastboot mode for most Samsung Galaxy devices - you'll be wasting your time doing this and typing "fastboot devices" for many hours!
If you have problems with your recovery, it works to just reflash the CF-autoroot kit, which happens to flash the cache partition too. My problem was similar to the OP's - a bootloop with TWRP's obviously buggy OpenRecoveryScript, which was installing a ZIP file over and over again.
If you flash the CF-autoroot specific to your device, TWRP will be gone, but the phone will boot normally again - with all your data on it - hooray!
Then you install TWRP or CWM recovery as you did originally.
Stay away from OpenRecoveryScripts! I'll be installing a ZIP file in the traditional, manual way from now on, from an external SD card so I can remove the card if I get another TWRP boot loop.
Click to expand...
Click to collapse
How do you install cf-autoroot when stuck in a boot loop with samsung galaxy S device if there is no fastboot?
My phone is stuck in bootloop too. It shows Twrp at the starting and then restarts. What am i supposed to do? I need help ASAP please
So I've wiped the Dalvik Cache, Data, Internal Storage, and System, but I forgot to flash before rebooting. Now it's stuck in the WARNING BOOTLOADER UNLOCKED screen and everytime I tried resetting to recovery mode it would turn off then turn back on at the same screen. ADB is not detecting the devices also. Is there anything I can do or is it bricked?
the_onlyhope said:
So I've wiped the Dalvik Cache, Data, Internal Storage, and System, but I forgot to flash before rebooting. Now it's stuck in the WARNING BOOTLOADER UNLOCKED screen and everytime I tried resetting to recovery mode it would turn off then turn back on at the same screen. ADB is not detecting the devices also. Is there anything I can do or is it bricked?
Click to expand...
Click to collapse
Boot into bootloader by holding down vol down and power together. The timing can be a little tricky when it is stuck or looping. Hold power until the screen goes dark and it tries to reboot, usually about 8 seconds. Then let go and immediately hit vol down + power together. Hold them until the bootloader screen comes up, should be pretty fast. Might take a few tries to get the technique down with it bootlooping.
From there you can flash firmware directly with fastboot, or boot it into TWRP to flash something from recovery. If TWRP fails to boot for some reason then fastboot flash it again.
It should not be a brick just from wiping everything. Well, just a soft brick anyway.
Thanks!
I was able to get into recovery!!
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"
"your device software cannot be checked for corruption" after installing twrp, help!!
Hello, as title says, following oem unlock procedure, i flashed twrp using fasboot however i could never boot it and now when i try to go to fastboot mode and/or reboot, i see this message "your device software cannot be checked for corruption[...] please lock bootloader"!! Dunno what to do? Please help!
Easy: do absolutely nothing, this is intended behaviour. Unlocking the bootloader leads to the displaying of this message on boot up. Just LG's way of saying continue at your own risk.
Ok so they're even more annoying than samsung..! Anyway, my problem is : how do i enter TWRP..? I flashed again, successfully.. Then i dunno how to enter it!
"The stock recovery appears but you have to select the factory reset option and it will boot into TWRP" i read this. Well it's wrong. Doing so just launch the factory reset!
This video https://www.youtube.com/watch?v=MR4DTgTxhGI shows phone reboots to TWRP after entering "fastboot reboot" (once recovery was flash) : here it just reboots normally!
"Finally Type “fastboot boot TWRP-Recovery-filename.img” to boot your LG G6 into TWRP Recovery" well i thought about that and tried it :
D:\Android\ADB&Fastboot>fastboot boot recovery.img
downloading 'boot.img'...
OKAY [ 0.901s]
booting...
FAILED (remote: unknown command)
finished. total time: 0.925s
I'm very disapointed so far, i expected the G6 to be easier to handle the S7 but it's a pain even before i start using it.. Hell!!
It seems to me that you didn't boot into twrp immediately after flashing it via fastboot. Afaik it's important that you don't boot into OS after flashing, otherwise twrp will be overwritten with stock recovery. I had the same problem when I did the procedure.
The only way I got it to work was booting into twrp via button combo immediately after flash (you know - keep pushing power and vol- until Lg G6 logo appears, release only power and immediately push it again, keep 'em pushed until factory reset, confirm twice and it should boot into twrp). Once you've booted into twrp directly after flashing, it should stick.
grushnickij said:
It seems to me that you didn't boot into twrp immediately after flashing it via fastboot. Afaik it's important that you don't boot into OS after flashing, otherwise twrp will be overwritten with stock recovery. I had the same problem when I did the procedure.
The only way I got it to work was booting into twrp via button combo immediately after flash (you know - keep pushing power and vol- until Lg G6 logo appears, release only power and immediately push it again, keep 'em pushed until factory reset, confirm twice and it should boot into twrp). Once you've booted into twrp directly after flashing, it should stick.
Click to expand...
Click to collapse
After doing this, for TWRP to stick, you have to flash a custom rom, or delete the system/bin/install-recovery.sh to prevent stock recovery overtwrite
Hi everyone! I followed multiple guides on how to unlock and flash TWRP on my LG G6 (H870). I successfully unlocked the bootloader, booted into the fastboot and performed flashing the latest TWRP recovery for my phone. Afterwards, I reboot the phone (tried nearly everything like disconnecting USB before, performed "fastboot reboot" or simply shutting down with the power button) and use the combo to get to the factory reset screen. After yes and yes I see the starting screen of TWRP, but after about five seconds the screen goes black and the phone continues with normal boot.
I appreciate any help!
Thread closed at OP's request.