So, I have the LG G4 AS986 which I presume is very similar to the Verizon VS986 but I decided to post here because they aren't exactly the same model. The phone has been working for years but recently got the dreaded bootlooping issue. I decided to follow a few guides to try and fix it by using LG KDZ Tool and LG UP and bricked it. I was able to unbrick the device by flashing some G4 Sprint files using the Qualcomm tool (qfil?). After unbricking the phone, I put the phone into download mode and flashed the phone using LG UP with a KDZ from the Verizon variant. LG UP said it was successful, however, whenever I try to boot the phone, a message pops up with "Secure booting error: 1006" or something similar to that and stays there until the battery is pulled. Somehow, I was able to flash TWRP on the device by nuking the laf partition but even flashing a custom rom on the device using TWRP, it still encounters the secure booting error issue and won't boot. Any help will be greatly appreciated! Thanks!
Related
After modifying build files failed, G4 bootlooped at starting logo.
Tried to repair it with lg bridge, and it was forced to update to 6.0 v20c.
Flashed it with v10fkdz(5.1), and the error message was shown:"Error Code=0x2000, Can't decide current device mode."
Can anybody help me to solve the problem?
I think you broke your download mode; sadly, it is the only mode that you can flash via LG Bridge and LG UP. If you have an unlocked bootloader, you can flash an image through fastboot. As for me, I can't flash on either of those programs since I also broke my download mode and I have a locked bootloader. Otherwise stated, I have a hard bricked device. Waiting for some possible new program to fix my device
I tried on 3 different PCs, and another available G4 device.
The problem is still there.
I don't know why,
but after reinstall LGUP, downgrade of my phone is OK.
Thx guys
Hello everyone. My LG G3 Cat. 6 (F460K) was boot looped. It was caused by an OTA update initiated by someone who was using my phone. Now, it's not usable. Only shows the LG logo but reboots and does that cycle while it's on. It has download mode, and I have tried flashing through LG Flash Tool 2014 with a KDZ (F460K30c) and it successfully finished. However, it's still having the same problem. I tried flashing with TOT, but I somehow get this error: i.imgur.com/aB13Jig.png (XDA won't allow me to put links)
I need your expert opinions on this case. I really need your assistance. Thank you in advance!
Hi all, I've had some issues with my G3 and have got to the point where I need the advice of wiser heads to try and fix the problem!
The phone seemingly died during an update a few weeks ago, but I was able to fix it using LG's tool and upgrading to Marshmallow. Then a few days ago with no warning the phone froze, and gets stuck in a bootloop at the LG screen, with the flashing LED. If I try to factory reset, I just end up with the Android Droid with a red triangle and I can't get any further. I've tried numerous guides I've found to try and reinstall the stock firmware, all without success. (I haven't tried accessing bootloader as I have download mode available). LG's own tool gets stuck at 4% when I try to recover, and I've tried the LG Flash Tool but get an error at 6% (LAF_READ_GPT_FAILED) using the 8974 dll. I've also tried the LGUP tool but that gets stuck at 6% (Error can't communicate with phone[Kilo Packet]. The phone was not rooted and is a 16GB UK version (model D855). I just seem to be going in circles now trying to find a solution, I suspect somewhere along the line I'm using the wrong combination of programs/TOT/DLL files so I could really do with someone pointing me in the right direction here!
Hi, was having some issues with my LTE through one of sprints mvnos and inTWRP 3.0.2 restored my modem backup from my phone zvc fw( as newly returned from lg support)
I was on CM13 at the time of the incident.
Immediately got a black screen, and doesn't boot or have any indication.
However, the phone is seen in windows as LGE AndroidNet USB. LG flashtool fails with mismatch and will not reset the phone.
I tried the guide below, but it asks for a partition.txt which I don't gave and have not been able to find. I'm stuck.
http://forum.xda-developers.com/sprint-lg-g3/general/guide-fix-hard-brick-recovery-guide-t3132359
Any ideas before I send back to lg repair support?
Thanks
I recently had my G3's motherboard replaced. I'm using G3 D855 32GB with Android 5.0 software version V20n.
I had troubles rooting my device with these methods:
http://forum.xda-developers.com/android/development/guide-root-method-lg-devices-t3049772
http://forum.xda-developers.com/lg-g3/general/guide-root-lg-firmwares-kitkat-lollipop-t3056951
Though after few more tries and research I came across this guide: http://forum.xda-developers.com/lg-g3/general/guide-root-method-lg-devices-t3129197 and successfully rooted my device (checked with Root Checker app).
Now i'm having difficulties flashing TWRP. I tried flashing using the official app TWRP manager with no luck, nor through flashify. For some reason with the Autorec app, the flash recovery button is doing nothing.
While flashing with flashify and TWRP manager I get this message when phone is booting: "Secure Booting Error! Cause: boot certification verify" at the left top of the screen (when LG logo appears).
I believe my software version (V20n) has something to do with it, because that's the cause for the rooting issues.
I would really appreciate any help, I'm dealing with it for few days now.
By the way, I had the same problem before and tried flashing KDZ, ending up with a fully bricked device (that's why I got my device's motherboard replaced) so please try to avoid solutions including this method.
Thanks!
I have exactly the same problem
OK I solved this issue
you have to root&flash recovery in one operation.
here is the link - http://forum.xda-developers.com/lg-...lick-root-twrp-recovery-t3072767/post59895642
Enjoy!