I found out my phone's (H815L) bootloader can not be unlocked through LG
The phone is rooted ('system-update' + root) and I can use Fastboot/ADB to get into recovery, but it errors and won't recognize the custom recovery. Ok.
I am wondering if there is a DualRecovery for the LG G4 for 'Locked Bootloader' to flash/push through Fastboot/ADB?
I want to unlock my bootloader and root my h815 but worried i might brick my phone as i did with my lg g3 and could never fix it so someone please help
panda968 said:
I want to unlock my bootloader and root my h815 but worried i might brick my phone as i did with my lg g3 and could never fix it so someone please help
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Click to collapse
If you are not confident enough then don't bother trying because messing around with the G4 can easily go wrong...
If you want unlock your bootloader and root your device you have tutorials for that and you have H815 internationnal G4 and he is unlockable
You must unlock your device with LG G4 support developper web site ..... recovered unlock.bin for your LG G4
You must install ADB and fastboot on your computer
you must have : driver USB for G4 installed
you must have : debbogage USB and Unlock OEM activated
Unlock Bootloader H815 INT ONLY : http://forum.xda-developers.com/g4/general/lg-g4-t3125162 or http://forum.xda-developers.com/g4/general/unlock-bootloader-install-twrp-root-t3128241
After you have Unlock your bootloader :
You can install TWRP Recovery with command ADB and flash SuperSu.Zip with TWRP for root your Device
Has anyone successfully put a custom ROM on this device? I used to have an old Samsung S3 where I was able to put on CM and it was a piece of cake, but with this tablet I'm having issues with the bootloader being locked.
So far I've tried to install TWRP, CWM, and Philz custom recoveries. The problem seems to be with the versioning. Everything is customized for the v500. I was able to install Philz_Touch_recovery_V490.img which allowed me to boot into some sort of 'fastboot' recovery mode when before I would just get the message: "error boot certification verify" on start up. This fastboot mode isn't the Philz interface and it doesn't give me the option to back anything up or boot a ROM. It doesn't really give me any options except to restart, restart bootloader, or power off.
Were you on Lollipop or Marshmallow before you bricked it? (Which one?)
Lollipop.
The device is not bricked as I am still able to access the stock ROM. I just never was able to access my boot loader. I keep getting the error message "Error: boot certification verify" My carrier is US Cellular and they tend to lock a lot of features on their device. Is it possible they blocked boot loader access to be assholes?
BTW, my device is successfully rooted. (I checked with a root verify app.)
I'm looking into implementing the loki-master hack to unlock my boot loader and hopefully then Philz recovery will work as intended. (It is the only custom recover option that didn't give me an out-right failure message). This does seem to be an advanced developer tool requiring some code skills. Anybody have any tips for this Loki procedure?
BossRoyce said:
Lollipop.
The device is not bricked as I am still able to access the stock ROM. I just never was able to access my boot loader. I keep getting the error message "Error: boot certification verify" My carrier is US Cellular and they tend to lock a lot of features on their device. Is it possible they blocked boot loader access to be assholes?
BTW, my device is successfully rooted. (I checked with a root verify app.)
I'm looking into implementing the loki-master hack to unlock my boot loader and hopefully then Philz recovery will work as intended. (It is the only custom recover option that didn't give me an out-right failure message). This does seem to be an advanced developer tool requiring some code skills. Anybody have any tips for this Loki procedure?
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Click to collapse
I would doubt if you could still use the Loki method on a stock LG Lollipop ROM. For example, LG patched the Loki exploit on the VK810 LG G Pad 8.3 as of KitKat, and Lollipop on this device can't even boot the ROM using the old bootloader - it requires the Lollipop bootloader. In our case, the exploited bootloader can be temporarily reflashed to get into TWRP, but then we have to reflash the Lollipop bootloader to boot the ROM again.
sorry bring up old stuff
so i was able to root. have su i bcked up stock recovery and basicly any recover i flash i get the boot error but also gets fastboot.
ofcoarse ive tried most common commands and she wont reconize any of them.
im a long time lg user and thinking that this old of a sytem needs to be bumped like g3
att has always had a strictly locked bootloader state
Help oem unlock m8
I am currently trying to unlock bootloader on Lg gpad f 8.0 v495. At&t I follow all steps until enable oem unlock in developer options.. this option is missing in my developer options.. anyone know why or how to fix this or can I proceed without it. Help please.
BossRoyce said:
Has anyone successfully put a custom ROM on this device? I used to have an old Samsung S3 where I was able to put on CM and it was a piece of cake, but with this tablet I'm having issues with the bootloader being locked.
So far I've tried to install TWRP, CWM, and Philz custom recoveries. The problem seems to be with the versioning. Everything is customized for the v500. I was able to install Philz_Touch_recovery_V490.img which allowed me to boot into some sort of 'fastboot' recovery mode when before I would just get the message: "error boot certification verify" on start up. This fastboot mode isn't the Philz interface and it doesn't give me the option to back anything up or boot a ROM. It doesn't really give me any options except to restart, restart bootloader, or power off.
Click to expand...
Click to collapse
can you point me to the files you used to root the device.
THank you
Lg g pad f 8.0 v495
I rooted with kingroot apk but make sure you use kingroot version no higher than 4.5 . Because you are going to want to use SuperSume to replace kingroot as superuser it runs alot smoother. And for some reason any version higher than 4.5 of kingroot the supersume always freezez u. Hope this helps. If u get time pm have a question totally unrelated to the g pad but could use some help.
i need help to install twrp on me lg f400l i have tried all the method i know and also the bump..
but everytime i flash the recovery its giving me an error.
boot cert failed.
i think i need to unlock the phones bootloader.
does Anyone sucessfully install twrp on f400l lte u+?
i wan't root my device, so i search on the internet and i was following this: https://blog.naver.com/dentzzang/221210626636 (it's korean blog. i'm also korean)
on this guide, i have to downgrade my phone
so i tried use LGUP to downgrade phone
and then, error apears
"invalid command response"
i'm using LGUP 1.14 and dll is 8994 0.0.4.0
i also tried UPPERCUT as administrator, but it was same
how can i downgrade my phone?
Use this alone with LGUP
Your to pick "upgrade" option and select stock lollipop kdz then change to "refurbish".
tmvkrpxl0 said:
i wan't root my device, so i search on the internet and i was following this: https://blog.naver.com/dentzzang/221210626636 (it's korean blog. i'm also korean)
on this guide, i have to downgrade my phone
so i tried use LGUP to downgrade phone
and then, error apears
"invalid command response"
i'm using LGUP 1.14 and dll is 8994 0.0.4.0
i also tried UPPERCUT as administrator, but it was same
how can i downgrade my phone?
Click to expand...
Click to collapse
Why not just unlock?
Sent from my LG-H815 using XDA Labs
I want to unlock bootloader, but "adb reboot-bootloader" doesnt work it just reboot in to the system
tmvkrpxl0 said:
I want to unlock bootloader, but "adb reboot-bootloader" doesnt work it just reboot in to the system
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Click to collapse
no hyphen between reboot and bootloader :
adb reboot bootloader
Which g4 model? Only the h811 and h815 can be unlocked officially. All others must use UsU (see my sig)
Sent from my LG-H815 using XDA Labs