Relocking LG G6 H870 Bootloader - LG G6 Questions and Answers

Can somebody pls help with relocking the bootloader on my LG G6?I'm on AquariOS Pie and have twrp and Nougat bootloader and I need this phone to be completely stock. Thanks in advance!

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full brick moto g4

Hey guys, I have a moto g4 (Xt 1622) 2 days ago I have reflashed a rom.... but When I do the update to Android 7.0.1 There were an hard brick...I followed this link : https://forum.xda-developers.com/moto-g4-plus/help/solved-unbrick-hard-bricked-dead-t3585016 But i have relocked my bootloader....so I don't have OS and I didn't activate "oem unlock"
Sorry for my bad English thanks a lot
Just to clarify:
What stock ROM did you use to re-lock your bootloader? Normally, you can only re-lock your bootloader by flashing and locking with stock firmware as new or newer than your bootloader, so I'm not entirely clear how you managed to hard brick with a locked bootloader (locked bootloaders generally require your device to be on the same firmware patch level).
Have you tried the blankflash here: https://forum.xda-developers.com/moto-g4-plus/how-to/moto-g4-plus-hardbrick-solved-guide-t3657761 You may have to try flashing with the September 2017 stock firmware here: https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138

custom rom for F800K

hi, I have bootloader unlocked with TWRP recovery and looking for any custom rom for this phone.
any help please?

How can I downgrade from Oreo to Nougat? (Want to unlock boot loader)

So I really want to install a custom rom and I know I need to unlock the boot loader and flash it with twrp. But I been reading around here and it seems unlocking the bootloader on Oreo is not possible and the only way to do that is to downgrade to nougat... except I don’t really know how to do this on my device since as previously stated, the boot loader is not unlocked and I don’t know where the stock rom for nougat is even available to download from, or any necessary tools to download to be able to do this (I’m a complete noob). Some info of my device: A2017u, Oreo, B20
Help would be appreciated, thank you
I think you may need to go back to Marshmallow to unlock bootloader and install TWRP but I'm not on an A2017U so won't try to advise you.
I did revert my own A2017G from latest Oreo back to Nougat ok. Since gone back to Oreo. It seems to work when stock but once you meddle with it that's when all the problems start.
RobboW said:
I think you may need to go back to Marshmallow to unlock bootloader and install TWRP but I'm not on an A2017U so won't try to advise you.
I did revert my own A2017G from latest Oreo back to Nougat ok. Since gone back to Oreo. It seems to work when stock but once you meddle with it that's when all the problems start.
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Question about flashing dumped files with LG UP H910 LG V20

Hi dear community,
I have flashed H915 KDZ on H910 LG V20 to unlock bootloader but without success because I was unable to ger into twrp but that is another story, how can I get back to H910 ROM since I have made a dump with LGUP (too many files and I do not know how to proceed)
Thanks for your precious help.
Sofiene.Saidi said:
Hi dear community,
I have flashed H915 KDZ on H910 LG V20 to unlock bootloader but without success because I was unable to ger into twrp but that is another story, how can I get back to H910 ROM since I have made a dump with LGUP (too many files and I do not know how to proceed)
Thanks for your precious help.
Click to expand...
Click to collapse
Reflash the H915 KDZ until you get TWRP. You can flash your DUMP with TWRP I think?
Sofiene.Saidi said:
Hi dear community,
I have flashed H915 KDZ on H910 LG V20 to unlock bootloader but without success because I was unable to ger into twrp but that is another story, how can I get back to H910 ROM since I have made a dump with LGUP (too many files and I do not know how to proceed)
Thanks for your precious help.
Click to expand...
Click to collapse
The only way to go back to stock H910 is to first root your device and flash the stock H910 twrp zip file.
[ROOT] HOWTO: AT&T H910 up to v20g (FULLY TESTED)
[ROM] H910: FULL return to stock v10q

HELP lg g4 h815 booloader unlock

hi, i wanted to unlock the bootloader on my lg g4 the problem is that lg terminated the support of their official bootloader unlock tools, are there any other safe alternatives (can install most roms with no hard brick)?
this is the rom that i wanted to install, i need to find a bootloader unlock method that will allow me to install this rom :https://forum.xda-developers.com/t/pixel-experience-plus-for-lg-g4.4008547/
thanks for the help in advance

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