My brother has a LG G4 from verizon. He tried to install MM through a KDZ file, something went wrong during the installation. Now the phone is in a bootloop, it says: "Secure booting Eroor! Error 1003". I can enter to the stock recovery and that's it, when I try to put it on download mode, it enters the screen where it says "Download Mode" and then reboots, it doesn't stay. I tried using LGUP but it doesn't detect it because it keeps reboting on download mode.
Is there a way to unlock the bootloader, entering fastboot mode or installing twrp from the stock recovery?
Please Help!
chandler240 said:
My brother has a LG G4 from verizon. He tried to install MM through a KDZ file, something went wrong during the installation. Now the phone is in a bootloop, it says: "Secure booting Eroor! Error 1003". I can enter to the stock recovery and that's it, when I try to put it on download mode, it enters the screen where it says "Download Mode" and then reboots, it doesn't stay. I tried using LGUP but it doesn't detect it because it keeps reboting on download mode.
Is there a way to unlock the bootloader, entering fastboot mode or installing twrp from the stock recovery?
Please Help!
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Sadly there is no current way to unlock the bootloader or install twrp on the Verizon vs986. I won't ask why he was trying to kdz MM when MM is available through the OTA update as long as he wasn't rooted. If he was rooted he should have used the lgup to put the stock LP 13b on it then checked for the MM update. and sadly if it won't stay in download mode I can't think of a way to get it out of bootlooping. Maybe someone smarter than me will chime in some time though.
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I followed the tutorial at http://forum.xda-developers.com/showthread.php?t=2762171 to install KK ROM on my OG E977, did EXACTLY like written, but then I got stuck at boot screen telling me I have a boot security error, probably due to a locked bootloader, I guess. I try to flash the stock KDZ firmware but KDZ updater offline fix tells me battery level is low when it's not, even when the battery was fully charged.
I can't switch off the phone manually, because it starts again and gets stuck at the LG logo screen with this message:
Secure booting Error!
Cause: boot certification verify
The only way to turn the phone off is with CWM touch recovery 6.0.4.8 by LGviet (after installing the Sling KK ROM or the F180 patch, I guess, because the recovery utility was CWM 6.0.4.7 non-touch installed by FreeGee after unlocking the bootloader.). And when I turn the phone off and plug the charger, the phone boots up by itself and gets stuck at boot security error screen.
I tried to send a CyanogenMod ROM via adb sideload, but it tells me the ROM is for E975, while the phone is a F180 model.
Could someone give me a help, please? Thanks in advance.
ksio89 said:
I followed the tutorial at http://forum.xda-developers.com/showthread.php?t=2762171 to install KK ROM on my OG E977, did EXACTLY like written, but then I got stuck at boot screen telling me I have a boot security error, probably due to a locked bootloader, I guess. I try to flash the stock KDZ firmware but KDZ updater offline fix tells me battery level is low when it's not, even when the battery was fully charged.
I can't switch off the phone manually, because it starts again and gets stuck at the LG logo screen with this message:
Secure booting Error!
Cause: boot certification verify
The only way to turn the phone off is with CWM touch recovery 6.0.4.8 by LGviet (after installing the Sling KK ROM or the F180 patch, I guess, because the recovery utility was CWM 6.0.4.7 non-touch installed by FreeGee after unlocking the bootloader.). And when I turn the phone off and plug the charger, the phone boots up by itself and gets stuck at boot security error screen.
I tried to send a CyanogenMod ROM via adb sideload, but it tells me the ROM is for E975, while the phone is a F180 model.
Could someone give me a help, please? Thanks in advance.
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How can you boot into recovery once it's in Secure booting error?
Any how fix it using teeny bin repair, it's easy fix.
Ahmed Xperia p said:
Any how fix it using teeny bin repair, it's easy fix.
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Or, just as an alternative, find a KDZ that works with the regular KDZ Updater (filesize up to 1.17GB worked for me). This way, as opposed to the offline method with LG Support Tool, you won't get a low battery error, even if the battery is completely dead. Had exactly the same problem myself, this was the solution I used.
I'm having issues with a LG Optimus G. I can't access Recovery or Bootloader. I can't even root it. When I use Root Checker, it says something it's wrong with the actual root.
All I wanna do, it's to install a custom ROM. But that seems impossible since I can't even get into recovery. I installed a KDZ but even then it won't work.
Download Mode, seems to be working. I tried rooting with the bat file, but nothing, it won't work!
I followed the Unbrick Tutorial, but nothing.
Any ideas?
Thanks
I used this Root on E975 with Stock 4.4.2 and it worked.
There is also a detailed description how to do it right.
You can unlock the Bootloader with FreeGee after you've rooted the device.
Then i would recommend you flash TRWP 2.8.7.0
P.s.
But you also can try towelroot or maybe King Root but i suggest the first Methode.
Thanks! King Root did work! Now it's rooted, still I can't install recovery I tried with FreeGee but it won't work it says "Perfoming action" for about an hour. Also tried with Rom Mananger but nothing.. it won't install it.
I keep getting the error "Secure Booting Error! Cause : boot certification verify" each time I tried to boot into recovery.
Maybe re-flash the last original KDZ file for your device first and then do the common steps -> Root -> Unlock Bootloader -> Flash Custom Recovery
You can Boot into download mode by "Hold VolUp + VolDn and put in the Charger cable connected with your Computer"
Then you can try the Original LG Software to "Reset" the device or use the LG Flash Tool 2014 to offline Flash a KDZ file.
KDZ for you device you can get here or use the Original LG Firmware tool to download for your device.
Get Sure you backup all the data you need before, becasue this Method will "clean" your device completly!
Edit:
Get sure you use the last USB Drivers, i've used the LGMobileDriver_WHQL_Ver_4.0.4.exe
I followed this tutorial: http://forum.xda-developers.com/g4/general/unlock-bootloader-install-twrp-root-t3128241
Here's what I did:
Unlocked bootloader
Booted into TWRP (version 3.0) (didn't install, just booted into)
Flashed SuperSU
Rebooted into system
Now whenever I boot the device I'm stuck in a boot loop.
So I can't boot the device up or get into fastboot mode (what should fastboot mode look like? I got into download mode at some point), not sure what to do?
I had same problem once, managed to handle it with LGUP and refubrish full stock rom
ashensii said:
I had same problem once, managed to handle it with LGUP and refubrish full stock rom
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I tried LGUP but it says the Model is "unknown" so when I select my phone it says "You have to select a known model, please." Can someone help?
I also tried flashing a stock kdz using LG flash tool but I got an error. Does anyone know what I can do? I can get my phone into download mode but don't know what to do on my computer.
I'll give someone $20 if they can help fix my phone for me
Paul397 said:
I also tried flashing a stock kdz using LG flash tool but I got an error. Does anyone know what I can do? I can get my phone into download mode but don't know what to do on my computer.
I'll give someone $20 if they can help fix my phone for me
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With LG up if it comes up with device unknow with usb cable still pluged in pull battery out then put it back.
Paul397 said:
I also tried flashing a stock kdz using LG flash tool but I got an error. Does anyone know what I can do? I can get my phone into download mode but don't know what to do on my computer.
I'll give someone $20 if they can help fix my phone for me
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I had the same problem.
If you can get your phone in the download mode, than try this.
1: Install LGBridge,
2: Boot your phone in download mode & start LGBridge,
3: Than on Software Update tab, on the bottom right corner, you will see an option saying "Update Error Recovery"
4: Click on it and your phone will be flashed to latest firmware. Make sure you are connected to net as it will need to download it.
Once the update it complete, Your phone should reboot normally.
Give it a try and let me know how it goes.
What I've done:
1. Tried LGNPST method but phone never showed up in the software
2. Tried flashing with LG official tool. That always resulted phone disconnected.[I did put my phone into download mode]
3.Tried almost all KDZ_FW_UPDATE methods they always stopped either in not responding-> close program OR extraction error
4. Tried sideloading using adb but they also resulted in "bad file" even push didn't work saying no permission to write(I think)
for adb I tried converted .zip of kdz using some guide in xda.
My phone is totally clean now. I can boot to Recovery or Download Mode. There's no file that's flashable right now. I'm in Philz touch recovery
This actually happened while I was flashing to unlock bootloader and charge went low.
I desperately want it to function properly. Please anyone with any new or updated methods, help me.
When normally trying to boot up, Google logo comes and phone switches off.
I was in F180L converted to E975.
I've INDIAN(20a) version kdz also european(10h) and korean(30e).
Hi everyone, I've spent the entire weekend trying to get my head around fixing this one...
My lg g3 was rooted with kingroot, i found an app called super sume which said it could switch king root to su... something went wrong on installation and when its booted up the phone wouldn't get a signal or even access the home screen. I've attempted flashing, recovery mode and download mode and each of them give me the dreaded error message "Secure Booting Error! Cause: boot certification verify" in the top left hand corner of my screen. Nothing seems to work any help would be appreciated. thanks
Bigrez said:
Hi everyone, I've spent the entire weekend trying to get my head around fixing this one...
My lg g3 was rooted with kingroot, i found an app called super sume which said it could switch king root to su... something went wrong on installation and when its booted up the phone wouldn't get a signal or even access the home screen. I've attempted flashing, recovery mode and download mode and each of them give me the dreaded error message "Secure Booting Error! Cause: boot certification verify" in the top left hand corner of my screen. Nothing seems to work any help would be appreciated. thanks
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Are you able to enter download mode?
If you enter download mod, can flash a kdz and. Also flash a different kdz file. For example if you are on 30b flash 30c...if you have twrp recovery flash sharpening mod.zip file from recovery
Anik49 said:
Are you able to enter download mode?
If you enter download mod, can flash a kdz and. Also flash a different kdz file. For example if you are on 30b flash 30c...if you have twrp recovery flash sharpening mod.zip file from recovery
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Click to collapse
HI i wasn't but i've just come across ImageprepGUI which has now let me start flashing again, just hope this works out. thanks anyway