Is unlocking bootloader necessary for twrp / root (us996)? - LG V20 Questions & Answers

Just received my V20 US996 from Amazon coming from a Nexus 6p running PureNexus. Been checking out some of the roms but I'm at a loss. I've read so much I think I've confused myself even more. I've read sites outside of XDA that give detailed instructions on how to install twrp / root with no mention at all about the need to unlock the bootloader on us996 but then I read some posts here and it says unlock bootloader and others that just say to install rom you need twrp / root. So...... which is it? Do I really need to unlock the bootloader and if so can it be relocked in case phone has to be sent back to amazon under square-trade warranty?
Thank you in advance for any help in this,
-Fihn

Related

G900V from 4.4.4 to most current version with root?

Looked thru the other threads, and didnt see anything that pertained directly perhaps someone can point me in the right direction.
Have my stock S5 from verizon, on 4.4.4 NK2 firmware. Looking to update to whatever is the most current stock firmware with root. I'm coming to this from years of rooting Sprint devices, this is my first Verizon and I've been putting it off forever. Been getting the nag screen everyday now for a software update and I figured it was the time to update this and get myself root.
Thanks in advance for any help in where to look. Please forgive me in advance if this is a duplicate, I searched...I really did, but since its all new to me I wanted to ask.
Looks like the process is to flash 4.4.2, root, check if bootloader can be unlocked, and then proceed 2 different ways if it can be dev bootloader unlocked. If it can, unlock bootloader, flash twrp, and then flash whatever rom you want. If you can't unlock the bootloader, folow the guides to upgrade keeping root with safestrap and use roms that are TW for locked bootloaders. Someone correct me if I'm wrong. I just got a 4.4.4 g900v myself in a trade and I'm figuring out how to proceed as well.
Ok, slight difference. You can root & check the bootloader from 4.4.4...
Root here (Using NCG stock kernel...
http://forum.xda-developers.com/ver.../safely-upgrade-root-4-4-4-nha-volte-t2879348
If you're having trouble finding the NI2 kernel like I did it's here...
http://forum.xda-developers.com/showthread.php?t=2784880
Then use the method bootloader unlock from method 3 here...
http://forum.xda-developers.com/ver...t/rd-unlocking-galaxys-s5-bootloader-t3337909
If you can unlock your bootloader (I could), then flash the bootloader of choice from that link above to correspond to the rom you want. I'll be trying out Phoenix with pd4 (installed from above link) from here...
http://forum.xda-developers.com/verizon-galaxy-s5/development/port-phoenix-rom-v12-0-t3400292

Unlock and relock still possible with A2017U B27?

Hi there folks,
Did anyone on stock b27 non-root, locked bootloader try if the unlock procedure provided by @DrakenFX still works? Also if relock is still working? I mean did the bootloader unlock procedure already got changed as announced from ZTE?
For now I want to stay stock, but don't want to loose possibility to unlock after the update to B27...
Thx!
Or is it at least possible to downgrade to B20 from B27 using tenfar's tool and then unlock bootloader?
Just for the record: it is still possible to unlock on fully stock B27 using this threads method:
http://forum.xda-developers.com/axon-7/how-to/guide-how-to-unlock-bootloader-stay-t3461165/
Gachmuret said:
Hi there folks,
Did anyone on stock b27 non-root, locked bootloader try if the unlock procedure provided by @DrakenFX still works? Also if relock is still working? I mean did the bootloader unlock procedure already got changed as announced from ZTE?
For now I want to stay stock, but don't want to loose possibility to unlock after the update to B27...
Thx!
Click to expand...
Click to collapse
I did it - it works

Looking for a thread?

I am a new Axon 7 user, and it has to be one of the best phones that I have owned. I ran across a thread yesterday that was a guide on root and to unlock the BL. I cannot seem to find it. All of the ones on here seem to be outdated and I do not want to brick my new phone if at all possible. I have the USA version U and I am on the most recent update B29. The thread I ran across came with the image to flash back to B20 and root and unlock the BL and then came with the B27, B29 updates to flash in TWRP to get back up to date with root and unlocked BL. All I am trying to do is Root and unlock the BL on my phone? Tenars thread only has the B27 file and I didn't know if I flashed that aboot it would brick my phone or not. Anyways if someone could please let me know that thread or point me to a thread that I can root and unlock the BL on the USA phone with latest firmware B29.
Thanks,
Leroy

What's the best way to root H870?

I'm gonna upgrade in the next few months but I want to unlock the device's full potential by rooting. So how did you go about rooting yours?
Thanks!
It depends on the model you get. I have the H872 (T-Mobile) and followed this guide. Not sure how the other models gain root. You would need to research more but this thread suggests the H870.
Oh yeah forgot to mention I have H870
Unlock bootloader, install TWRP, install Magisk.
On H870, there's no need to flash any other rom first.

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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