LS997 (September 2016 security patch), got to the end of root and couldn't reboot into TWRP recovery. The device is recognized in ADB while in fastboot but when I'm at the secure startup it's unrecognized, like USB debugging is disabled.
https://forum.xda-developers.com/v20/how-to/guide-root-twrp-lg-v20-using-dirtysanta-t3722278
If you've hit secure startup the phone has likely booted into regular Android far enough to replace twrp with stock recovery. Reboot into fastboot and reflash twrp (you can use the newest twrp if you want). Once done flashing unplug from PC and pull the battery. Reinsert the battery then boot into twrp via the factory reset/volume button method: hold volume down, press power until the screen turns on then (still holding vol - ) tap power repeatedly until a prompt to factory reset appears. Approving it twice boots twrp if it's installed, otherwise stock recovery will do the reset.
Once in twrp go to wipe, then format data (type yes to confirm), then go to reboot, then recovery. Once twrp restarts flash your choice of magisk/supersu.
Once one of those two is installed it makes it so twrp won't be replaced.
Phoenix591 said:
If you've hit secure startup the phone has likely booted into regular Android far enough to replace twrp with stock recovery. Reboot into fastboot and reflash twrp (you can use the newest twrp if you want). Once done flashing unplug from PC and pull the battery. Reinsert the battery then boot into twrp via the factory reset/volume button method: hold volume down, press power until the screen turns on then (still holding vol - ) tap power repeatedly until a prompt to factory reset appears. Approving it twice boots twrp if it's installed, otherwise stock recovery will do the reset.
Once in twrp go to wipe, then format data (type yes to confirm), then go to reboot, then recovery. Once twrp restarts flash your choice of magisk/supersu.
Once one of those two is installed it makes it so twrp won't be replaced.
Click to expand...
Click to collapse
Did this, got to the set-up screen (languages, accessibility) and an error ¨com.android.phone has stopped¨ spammed the screen. I tap ¨stop app¨ and the pop-up comes back immediately.
I tried to fix it by factory resetting (in the settings, NOT using the volume down/power button menu OR TWRP) and now I´m stuck in TWRP. Every time I try to reboot to System, it boots to TWRP now.
strapdad said:
Did this, got to the set-up screen (languages, accessibility) and an error ¨com.android.phone has stopped¨ spammed the screen. I tap ¨stop app¨ and the pop-up comes back immediately.
I tried to fix it by factory resetting (in the settings, NOT using the volume down/power button menu OR TWRP) and now I´m stuck in TWRP. Every time I try to reboot to System, it boots to TWRP now.
Click to expand...
Click to collapse
Power down, then boot to twrp using the volume buttons. Use the wipe menu there to do the reset.
Phoenix591 said:
Power down, then boot to twrp using the volume buttons. Use the wipe menu there to do the reset.
Click to expand...
Click to collapse
Wiped it, still get the com.android.phone errors.
Unfortunate, makes doing anything impossible with so many error popups.
strapdad said:
Wiped it, still get the com.android.phone errors.
Unfortunate, makes doing anything impossible with so many error popups.
Click to expand...
Click to collapse
Reflash your variant's official KDZ using [PARTITION DL] with patched LGUP leaving [aboot], [abootbak], [recovery], [recoverybak] partitions unchecked.
- Once the flash finishes & phone reboots, do a battery pull so phone doesn't fully boot (wiping recovery & encrypting data)
- Insert battery again
- While pressing volume down button - reinsert usb cable so it boots into fastboot mode.
- Follow dirtysanta guide for your variant from running step3.bat onwoards (which flashes TWRP back into your otherwise stock phone).
LS997, no official KDZ. Use VS995, but dump everything with LGUP (bar userdata) before hand
Related
0. LG G2 4.4.2 D802 CIS
1. Get "root" by Stump 1.2.0
2. Using AutoRec
3. Reboot in recovery mode with TWRP 2.7.0.0
4. Made “backup”, and copied it to PC
5. Made Wipe, Advanced Wipe
6. Flashing CloudyG2 3.3 from external USB OTG
7. After that got black Screen after LG logo
.....
8. Download D802_PATCH_GO_LP_V1.1_droidth.zip, and installed it from Recovery Mode by TWRP
9. Reboot system, now:
Phone cyclically restarts from the beginning and to LG logo, and so on….And I cant enter to the recovery mode. Cool. That can I do, instead throw in the trash?))
I assume you're following directions from this post: http://forum.xda-developers.com/showpost.php?p=61710456&postcount=1304
If so, I see a couple issues. You did not update TWRP to 2.8.7.1 as indicated, and why are you flashing from USB OTG always copy to your internal memory. You likely can get back to recovery, but it takes timing and patience. I've been in the same situation before. Just an FYI we call a cyclic restart a bootloop.
While it's doing the startup hold the power button until it powers off, it will restart again after. So here's the trick as soon as the screen shuts off you have to let go of the power button and immediately do the vol down power button combo, hold them both until recovery starts. If held too long it will reboot again. Like I said timing is everything, but you should be able to get it with patience. Good luck!
You did not use latest TWRP and you did not flash LP bootstack. Go to recovery, delete system, data, cache, flash latest TWRP, then flash LP bootstack, then Cloudy again
To enter recovery, press power+volume down, hold until you see LG logo, then FAST press power+vol down again, white screen will show up asking to factory reset. press power button, then press power button again. phone will enter recovery.
wolfclan68 said:
I assume you're following directions from this post: http://forum.xda-developers.com/showpost.php?p=61710456&postcount=1304
If so, I see a couple issues. You did not update TWRP to 2.8.7.1 as indicated, and why are you flashing from USB OTG always copy to your internal memory. You likely can get back to recovery, but it takes timing and patience. I've been in the same situation before. Just an FYI we call a cyclic restart a bootloop.
While it's doing the startup hold the power button until it powers off, it will restart again after. So here's the trick as soon as the screen shuts off you have to let go of the power button and immediately do the vol down power button combo, hold them both until recovery starts. If held too long it will reboot again. Like I said timing is everything, but you should be able to get it with patience. Good luck!
Click to expand...
Click to collapse
Is it correct?
1. Hold Power on Lg logo
2. When the screen shuts off:release power button and quickly push Volume+Power on the some period?
One time i seen screen with proposal of erase system, i pushed Yes...and now it rebooting again. And some time it was button hardware assignments screen.
Mashed_Potatoes said:
You did not use latest TWRP and you did not flash LP bootstack. Go to recovery, delete system, data, cache, flash latest TWRP, then flash LP bootstack, then Cloudy again
To enter recovery, press power+volume down, hold until you see LG logo, then FAST press power+vol down again, white screen will show up asking to factory reset. press power button, then press power button again. phone will enter recovery.
Click to expand...
Click to collapse
Ok.
1. How can i flash latest TWRP from the TWRP recovery menu, is it possible?
2. You mean flash Bootloader Changer 2.2, and choose Lollipop bootstack in it?
Thanks.
...going to to spend all weekend pushing power buttons)))
Romyaldich said:
Is it correct?
1. Hold Power on Lg logo
2. When the screen shuts off:release power button and quickly push Volume+Power on the some period?
One time i seen screen with proposal of erase system, i pushed Yes...and now it rebooting again. And some time it was button hardware assignments screen.
Ok.
1. How can i flash latest TWRP from the TWRP recovery menu, is it possible?
2. You mean flash Bootloader Changer 2.2, and choose Lollipop bootstack in it?
Thanks.
...going to to spend all weekend pushing power buttons)))
Click to expand...
Click to collapse
You can flash latest TWRP and LP bootstack in TWRP. They are both ZIP files so it will work. I would give you links but i'm not sure which G2 variant you have
Mashed_Potatoes said:
You can flash latest TWRP and LP bootstack in TWRP. They are both ZIP files so it will work. I would give you links but i'm not sure which G2 variant you have
Click to expand...
Click to collapse
thanks, but first of all - i can not enter to recovery mode, ordinary button combination do not work. As i wrote before.
If you really can't enter recovery you'll have to "KDZ".
Look over there: http://forum.xda-developers.com/showthread.php?t=2797190
Find the appropriate rom.kdz, flash it with the tool.
If this worked, root stock LP, Autorec v2 it, enter recovery with key combination or if this fails with tools like "Quick Reboot" from play store.
DO NOT FORGET to wipe system, data, caches and to flash an appropriate stack, then flash rom, gapps and supersu. You can do this in one step.
If you want to shut down your phone, just press POWER for around 10s. Do not flash with battery under 50%.
You may find SRKTool useful.
Try entering download mode and flashing stock rom through KDZ or TOT method. There is a thread called "G2 go back to stock" in G2 General you will find all instructions there
tip: disconnect usb devices like usb wifi dongle, web camera and external hdd, they used to cause me problems when flashing KDZ
After performed wipe cache and firmware update with "Swift&Fast Slim B160 aio" ROM, the phone reboot and stuck at waiting for booting... ==> wait for 3 hours and still show the same as BOOTING.
Performed the factory reset by press Volume Up and Power, the Factory Reset is now stuck at 99%
Please help to the the phone back in working condition.
Resolved yet?
Possible idea
You can probably still load TWRP. Press and hold volume down + power at the same time to load fastboot mode.
ROM Flashing
Obtain a ROM of your choice, and note the location on your computer.
reboot your device into fastboot mode via one of the following options.
1. adb reboot bootloader (requires USB debugging to be turned on).
or...... power off the device then back on with 'vol up' + power button.
Wipe your device.
2. fastboot -w
Update your ROM.
3. fastboot update </path/to/your/RomFile.zip>
Your phone will update and automatically reboot into the new ROM. Try another ROM if Swift & Fast Slim isn't working. Your file could be corrupted.
did u get things fixed?
Hi, everyone.
I have a galaxy s8 SM-G950FD. I have once flashed TWRP and rooted the device successfully.
Then I tried to install a custom ROM but I got bootloop.
After that, I flash official ROM to unbrick my device. But since then, whenever I tried to flash TWRP again I got this message "Verification failed unable to restart your device the integrity verification has failed. You need to reset your device to factory default settings. This will erase all your data."
My device is still working fine but I want to try to flash a new ROM (even if I may brick my device forever). I don't know what to do. Can you guys give me some advice ?
Thank you!
It's quite a simple fix I think: You need to make a backup of the Data partition and then do a wipe using TWRP. This happens because TWRP cannot handle Samsung's Encryption; the only way to bypass this problem is by formatting once again.
MikeTheTechSavvy said:
It's quite a simple fix I think: You need to make a backup of the Data partition and then do a wipe using TWRP. This happens because TWRP cannot handle Samsung's Encryption; the only way to bypass this problem is by formatting once again.
Click to expand...
Click to collapse
But I cannot boot into TWRP. How can I do that ?
If you're stuck in the bootloop you should press the force reboot key combination: Power Down + Home + Power. After the device restarts switch the Volume Down key for the Volume Up key right after the screen goes blank. That should get you into TWRP (if it's correctly installed), otherwise directly into the stock recovery.
MikeTheTechSavvy said:
It's quite a simple fix I think: You need to make a backup of the Data partition and then do a wipe using TWRP. This happens because TWRP cannot handle Samsung's Encryption; the only way to bypass this problem is by formatting once again.
Click to expand...
Click to collapse
MikeTheTechSavvy said:
If you're stuck in the bootloop you should press the force reboot key combination: Power Down + Home + Power. After the device restarts switch the Volume Down key for the Volume Up key right after the screen goes blank. That should get you into TWRP (if it's correctly installed), otherwise directly into the stock recovery.
Click to expand...
Click to collapse
I cant flash/get into TWRP. I tried to boot into stock recovery and do a system wipe/factory reset. Then I flash TWRP again but nothing seem to happen. I tried to boot into recovery and it get me to the stock recovery not TWRP.I did unlock OEM, used Odinv3.12, twrp-3.1.1-2-dreamlte.img.tar.
I had the same issue.
After Odin has flashed the Recovery it performs an auto reboot (if checked in Odin). So at this reboot hold Vol up + Home + Power as soon the screen goes of. You need to be quick. Then it should boot into TWRP.
True, Samsung's stock recovery is very persistent lately and if you tick the auto-reboot you have to be very fast in switching to Recovery mode combo.
Otherwise you can choose not to tick auto-reboot, force restart the device after the TWRP flashing was successful and immediately switch to the Recovery combo.
Here you go: two ways of doing this.
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"
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?
Click to expand...
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.
Click to expand...
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
Click to expand...
Click to collapse
hi, did youmanage to solve this problem? I am aving the exct same problem. Disconnecting the ucb isnt working for me