LG G2 VS980 (Verizon). Rooting works fine on both versions. TWRP Manager gives a white error screen with the demigod handler, and AutoRec all gives a "security error" LG logo with bootloop on 3aa.
I tried downgrading to 39A and again can root, but trying to flash TWRP gives problems.
AutoRec (lollipop version) does nothing when I click the "Flash TWRP" image inside the app. It says it's done loading and backing things up, ok to flash now. Restore stock show toast messages like it's doing something. Just won't do TWRP.
Manually flashing TWRP 2.8.whatever also results in the same "Security Error" LG logo bootloop.
Does anyone have an up to date working method? Thanks!
Related
Hi Guys,
I had been installed a CM 10 Stable with CWM on my LG G2 (D802). I've tried to flash a stock KitKat Rom for my phone, using this tutorial:
http://www.droidviews.com/android-4-4-2-kitkat-rom-on-lg-g2-d802-install-twrp/
I was hoping, that i can easily make a backup with cwm, flash the zips and check the factory rom out. The process crashed (perhaps because I had cwm), and i was trying to reboot the phone into the recovery mode. But instead, the default factory reset gui from lg occurs and after a confirmation comes a screen with the message "boot certification verify, Secure booting error, Cause: boot certification error".
It seems, that my cwm recovery is also flashed with a new kernel. I can't get into the recovery and download-mode.
In the next step I have tried this:http://forum.xda-developers.com/showthread.php?t=2582142
and then: http://forum.xda-developers.com/showthread.php?t=2451696
The single steps passed without errors, but nothing changed.
Is there any other possibility to unbrick my phone?
Sorry for my english
- Zeiti
zeiti said:
Hi Guys,
I had been installed a CM 10 Stable with CWM on my LG G2 (D802). I've tried to flash a stock KitKat Rom for my phone, using this tutorial:
http://www.droidviews.com/android-4-4-2-kitkat-rom-on-lg-g2-d802-install-twrp/
I was hoping, that i can easily make a backup with cwm, flash the zips and check the factory rom out. The process crashed (perhaps because I had cwm), and i was trying to reboot the phone into the recovery mode. But instead, the default factory reset gui from lg occurs and after a confirmation comes a screen with the message "boot certification verify, Secure booting error, Cause: boot certification error".
It seems, that my cwm recovery is also flashed with a new kernel. I can't get into the recovery and download-mode.
In the next step I have tried this:http://forum.xda-developers.com/showthread.php?t=2582142
and then: http://forum.xda-developers.com/showthread.php?t=2451696
The single steps passed without errors, but nothing changed.
Is there any other possibility to unbrick my phone?
Sorry for my english
- Zeiti
Click to expand...
Click to collapse
i think this code was only for TWRP what you do in the second step
Did you try this? http://forum.xda-developers.com/showthread.php?t=2448960
Sent from my VS980 4G using Tapatalk
comk4ver said:
Did you try this? http://forum.xda-developers.com/showthread.php?t=2448960
Sent from my VS980 4G using Tapatalk
Click to expand...
Click to collapse
Thanks for your answer, but the link won't help me. For this I need an opportunity to get into the download mode, but i can't
What do you get when power on ? Do you boot into fastboot.
I'm not sure at all what caused this problem. I downloaded Autorec to try and update my recovery, it seems to have worked fine and I can access my recovery fine. After backing everything up with TiBu, and TWRP (EFS because I was told to always have a backup), I rebooted my phone and when I get to the LG logo, it says "Security Error" and reboots infinitely until I power it off. I can still get into recovery and restore but I can't boot into system.
What does this mean? Do I have to restore to stock or is there a way I can repair the partition(s)?
SOLVED: Flashed 39A KDZ
So I tried flashing CM13 via TWRP and I did, but whenever I try to access the recovery it just shows the LG logo and the boot certification error. When I try to install a recovery via Autorec it shows an error when installing the loki tool, so I don't know what to do. Any help? CM13 works fine and I can boot to it, but I'm wondering how I can access my recovery again. Thanks
failed1234 said:
So I tried flashing CM13 via TWRP and I did, but whenever I try to access the recovery it just shows the LG logo and the boot certification error. When I try to install a recovery via Autorec it shows an error when installing the loki tool, so I don't know what to do. Any help? CM13 works fine and I can boot to it, but I'm wondering how I can access my recovery again. Thanks
Click to expand...
Click to collapse
well my way was to fgo back to KK using flash tools. is it boots try using flashify.. if it boots into system.
I have LG G2 D802 KK 4.4.2
Earlier I installed using this guide stock KK 4.4.2.
Then I rooted it using IOroot25r
then install TWRP using AutoRec
and then it stuck in booting in green led .
I try wiping in TWRP and after that it stucked in LG logo and then I try this guide again and it stuck in 95% with FAIL, LGFlashTool says "FBOOT check" and then "Fail to get BOOT complete status" .
I can get it in download mode
It keeps booting into TWRP now and I dont have ROM on the device to flash through TWRP,
and the device is not recognizable by the PC..
What can I do? :crying:
thanks
Well, now there are still TWRP,
but it stuck in LG logo and the green led is flashing.
any ideas?
thanks
So, I did brick my D802 in some way.
After a long history from cloudy g2-g3, rr, cm12, cm13, lineage 14.1, I clicked by mistake on the OTA of the lineage.
I thought I could stop the update once in the recovery, but I got stucked in the recovery bootloop. I got rid of it via recovery terminal, but system didn't boot. I tried reflashing lineage, nothing happened, I tried restoring a cm13 full backup, nothing happened, so I got back in download mode to restock with lollipop kdz (the one I used every time I restocked to change rom). It did not work, and I had to download a different KDZ to get to stock again.
Now, all the methods always used to root + recovery didn't work, so I manually rooted, installed the proper AUTOREC, but it didn't work (as I understand after hours of searching because supersu had updated himself in the meantime).
So I tried to install the TWRP image using flashify, it didn't work and corrupted something in my recovery. So i tried to unroot everything and reinstall the original root + supersu without letting him autoupdate. Not working.
Well, now I can boot and I can get in original lollipop rom, but I have no recovery and download mode appears but doesn't work anymore (once I had 3 COM ports when connected in download mode, now I can see only one; kdz flash does not sense the phone connected). When I try to open recovery I got the error "boot certification verify, secureboot error" in the top left corner of the screen, then a white page opens with the message "critical error" "demigod crash handler", volume up to download mode (that opens but does not work), volume down to reboot.
Now, I am stucked, I cannot find any suggestion of what to do to get the recovery working or to get the download mode working again.
Any help will be highly appreciated.
Thank you very much guys.
Not sure will it help but you may give it a try:
https://forum.xda-developers.com/lg-g2/development/tools-srk-tool-useful-toos-lg-root-twrp-t3079076