HELP lg g4 h815 booloader unlock - LG G4c Questions & Answers

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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no one can help ????
Try to follow this tutorial.

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LG G2 D801... Installing custom rom related question...

Hello
I have T-mobile variant of LG G2 D801 and i was thinking of installing custom rom on it.
But i have this query which i would like to ask before i continue.
My device is currently sim locked so after installing custom rom, will i be able to unlock it via code? or should i unlock it first then install?
Also it is weird to ask but after unlocking the device with stock rom, will it stay permanent? Is it possible for the device to get locked again after custom rom installed on it. I was thinking of installing CM13 on it.
Please help clear my doubts.. I am kind of new in this custom rom stuff. The last time i installed custom rom on a device was long ago and that device was also factory unlocked so it was piece of cake. So i am not sure how to proceed with this one...
Regards!!!

Please help Relock Bootloader

Hi guys I have the retus Moto g5 plus
And I'm on NPNS25.137.35-35
I flashed TWRP and a few roms but would like to return to stock and Relock the boot loader the problem is I have reflashed the stock rom with NPNS25.137.35-35
And it works fine but the fastboot oem lock fails and says still requires signed boot or something like that.
Can anyone help or give me a step by step with commands to try ? Am I screwed because I installed TWRP ? I can learn to live with unlocked bootloader if I must but the OCD in me wants to lock it lol
Thanks for any help.
I was able to relock the bootloader should have searched the forum a little more before i posted thanks anyway
mikegwald said:
I was able to relock the bootloader should have searched the forum a little more before i posted thanks anyway
Click to expand...
Click to collapse
Just one question.....didnt you agree on Moto web site that you were unlocking your phone and they have your number on file?
Can you still return it?
thxs
mike
Back to Stock ROM Moto G5 Plus with OTA Updates
mikegwald said:
Hi guys I have the retus Moto g5 plus
And I'm on NPNS25.137.35-35
I flashed TWRP and a few roms but would like to return to stock and Relock the boot loader the problem is I have reflashed the stock rom with NPNS25.137.35-35
And it works fine but the fastboot oem lock fails and says still requires signed boot or something like that.
Can anyone help or give me a step by step with commands to try ? Am I screwed because I installed TWRP ? I can learn to live with unlocked bootloader if I must but the OCD in me wants to lock it lol
Thanks for any help.
Click to expand...
Click to collapse
You cannot downgrade any stock ROM. Here in your built number extra S stands security patch and it not 35-35 its 35-5 (5 Indicated May security patch). If you want to come back on stock ROM with OTA updates then First install any Custom ROM on your device then Flash with Stock ROM Brazilian NPN25.137.15 (Indian Variant) Download from Firmware site and flash it using "fastboot oem lock" commands. Search for Installation of Custom Rom you will get it.
mikegwald said:
I was able to relock the bootloader should have searched the forum a little more before i posted thanks anyway
Click to expand...
Click to collapse
How did you do it?

Can I Convert My LG G6 H873 To The LG G6 H872 For Rooting Purposes?

It has come to my attention that the H873 is not (yet) rootable, and may never receive a root. Though that is a bummer, while looking for possible ways to root, I have read many forum-posts relating to the conversion of a H872 device to a H873, in order to receive the Android 9 update. So, is the vice-versa possible? Can I change my H873 to the H872, and root it from there? Any answer will be greatly appreciated. Thanks for reading.
No. You will brick your device.
DuringSummer said:
No. You will brick your device.
Click to expand...
Click to collapse
Thanks for the reply. Soft brick, or Hard brick? Has it been confirmed that bricking will occur? If so, then how did people swap from H872 to H873, all without bricking their phone, and without the need for root?
Hard. People can change H872 to H873 and install Android 9 on it is because they're still installing an official OS on their phones.
Rooting and installing Custom ROM requires an unlocked bootloader and a custom Recovery.
Installing a custom Recovery over a locked bootloader can cause a hard brick.
DuringSummer said:
Hard. People can change H872 to H873 and install Android 9 on it is because they're still installing an official OS on their phones.
Rooting and installing Custom ROM requires an unlocked bootloader and a custom Recovery.
Installing a custom Recovery over a locked bootloader can cause a hard brick.
Click to expand...
Click to collapse
Don't get me wrong. I mean to flash the official stock Firmware of the H872 onto my H873, so, there is no rooting/custom recovery/custom ROM required. I have already rolled back to Android 7 for the H873, so I know how to use LG UP and things of the like.
What is it that you want to do? If you don't want to root, why bother flashing 872 firmware to your 873? Do you not already have the latest update on H873?
I'll say this once again, flashing H872 onto H873 will not get you root. If your plan is to convert your H873 to H872 and then root it, it will still fail. Because you need an unlocked bootloader to root.
The only two devices to get unlocked bootloader are H870 (EU) and H872 (T-Mobile).
DuringSummer said:
What is it that you want to do? If you don't want to root, why bother flashing 872 firmware to your 873? Do you not already have the latest update on H873?
I'll say this once again, flashing H872 onto H873 will not get you root. If your plan is to convert your H873 to H872 and then root it, it will still fail. Because you need an unlocked bootloader to root.
The only two devices to get unlocked bootloader are H870 (EU) and H872 (T-Mobile).
Click to expand...
Click to collapse
Aren't there unofficial ways to unlock the H872? And even if there aren't, if I were to convert to the H872, will that not allow me to unlock via the official website? Also, i don't really care which model I convert to, so long as it works. I am willing to convert to H870, or the US997; It does not matter.
TipTopHiatus said:
Aren't there unofficial ways to unlock the H872? And even if there aren't, if I were to convert to the H872, will that not allow me to unlock via the official website? Also, i don't really care which model I convert to, so long as it works. I am willing to convert to H870, or the US997; It does not matter.
Click to expand...
Click to collapse
The "official" method won't work because even if you flash H870/US997 firmware to your H873 you still can't unlock your device as the "unlocked code" required to unlock BL is tied to your device ID and IMEI, you changing your firmware will not change that.
Same with H872. The H872 can be unlocked because T-Mobile does not lock their bootloader, you changing the firmware of your H873 to H872 will not allow you to unlock. And very likely you'll end up with a hard brick from which you can't recover.
If you still want to be experimental, go ahead.
DuringSummer said:
The "official" method won't work because even if you flash H870/US997 firmware to your H873 you still can't unlock your device as the "unlocked code" required to unlock BL is tied to your device ID and IMEI, you changing your firmware will not change that.
Same with H872. The H872 can be unlocked because T-Mobile does not lock their bootloader, you changing the firmware of your H873 to H872 will not allow you to unlock. And very likely you'll end up with a hard brick from which you can't recover.
If you still want to be experimental, go ahead.
Click to expand...
Click to collapse
Thanks. I'll ask around on more forums, and see if I can do something. Worse case scenario, I either wait for an unofficial root to be released, or just try swapping for a H872. Again, thanks for the help.
There won't be "official" or even "unofficial" unlock for the phone. The bootloader is locked by the carrier and therefore there won't be any official unlock, and the phone is old and the development scene for this phone isn't as impressive and this is why there won't be any unofficial unlock method.
Your best bet is swapping your model with H870/H872/US977
DuringSummer said:
There won't be "official" or even "unofficial" unlock for the phone. The bootloader is locked by the carrier and therefore there won't be any official unlock, and the phone is old and the development scene for this phone isn't as impressive and this is why there won't be any unofficial unlock method.
Your best bet is swapping your model with H870/H872/US977
Click to expand...
Click to collapse
There is hope! 6 days ago, somebody was asking a question for the H873. It seems that they're trying to form a root. In addition to that, not too long ago, there was an app that gave root access. I'm not sure if it's permanent, though, and, apparently, since it's not done, it gives all apps root access, instead of the ones that you grant root access to. I don't think this scene is dead, given those two forums. Guess we'll just have to keep our chins up.
TipTopHiatus said:
Don't get me wrong. I mean to flash the official stock Firmware of the H872 onto my H873, so, there is no rooting/custom recovery/custom ROM required. I have already rolled back to Android 7 for the H873, so I know how to use LG UP and things of the like.
Click to expand...
Click to collapse
Can u please tell me how did u rolled back to nougat. I've updated my h873 to pie now it's super laggy. Can u help me please :crying:
ThisizAkib4747 said:
Can u please tell me how did u rolled back to nougat. I've updated my h873 to pie now it's super laggy. Can u help me please :crying:
Click to expand...
Click to collapse
I don't remember exactly how I did it, but I remember following a guide off of XDA, so, it should be around here somewhere. Also, if you haven't already, I'd recommend factory resetting after an upgrade/downgrade. My phone used to lag as well, but, after factory-resetting, it works like a charm. I wish you luck on your venture. Make sure to use the correct firmware! Apparently, it'll brick the device if you flash a different model's firmware.
TipTopHiatus said:
I don't remember exactly how I did it, but I remember following a guide off of XDA, so, it should be around here somewhere. Also, if you haven't already, I'd recommend factory resetting after an upgrade/downgrade. My phone used to lag as well, but, after factory-resetting, it works like a charm. I wish you luck on your venture. Make sure to use the correct firmware! Apparently, it'll brick the device if you flash a different model's firmware.
Click to expand...
Click to collapse
Thanks for the info .
I've tried some XDA guide but none of them are working for me.
Hoping i will find some other thread that would work.
Thanks for replying
Im having h873, and i want to install custom rom but nothing is getting to unlock bl or to install custome rom...im disapointed
---------- Post added at 09:04 AM ---------- Previous post was at 09:03 AM ----------
TipTopHiatus said:
I don't remember exactly how I did it, but I remember following a guide off of XDA, so, it should be around here somewhere. Also, if you haven't already, I'd recommend factory resetting after an upgrade/downgrade. My phone used to lag as well, but, after factory-resetting, it works like a charm. I wish you luck on your venture. Make sure to use the correct firmware! Apparently, it'll brick the device if you flash a different model's firmware.
Click to expand...
Click to collapse
If you found a way plz tell me

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