Unlock bootloader and back to stock - OnePlus 3T Questions & Answers

I have unlocked my bootloader and tried beta 8 for my OP3T.
I would want to go back to fully stock (Lock bootloader, One plus recovery)
Is there any simple toolkit available?

Related

Question about the Spain Moto X XT1058 unlocking bootloader & more questions

Hey everyone, I just grabbed a Spain variant of the Moto X. The model number is XT1058. I did unlock the bootloader. However, i didn't flash a custom recovery or root the phone yet because I have a couple questions before I go any further..
1. Since the bootloader is unlocked now, will I still receive updates from Motorola/Google or would I have to re-lock the bootloader?
2. If I do flash a custom recovery and root, what roms can i flash...T-Mobile..ATT ..International..etc?
3. I am using the phone with ATT right now...I noticed the data icon goes from H, H+ to 4G....does 4G mean I am picking up ATT LTE?
4. If i wanted to re-lock the bootloader, am I able to with the fastboot command to re-lock it?
Thanks eveyone
plmiller0905 said:
Hey everyone, I just grabbed a Spain variant of the Moto X. The model number is XT1058. I did unlock the bootloader. However, i didn't flash a custom recovery or root the phone yet because I have a couple questions before I go any further..
1. Since the bootloader is unlocked now, will I still receive updates from Motorola/Google or would I have to re-lock the bootloader?
2. If I do flash a custom recovery and root, what roms can i flash...T-Mobile..ATT ..International..etc?
3. I am using the phone with ATT right now...I noticed the data icon goes from H, H+ to 4G....does 4G mean I am picking up ATT LTE?
4. If i wanted to re-lock the bootloader, am I able to with the fastboot command to re-lock it?
Thanks eveyone
Click to expand...
Click to collapse
Relocking your boot loader will not have any benefits, your warranty is void as soon as you unlock a retail version
You absolutely will receive the ota but you need to maintain the stock rom 100% as it was out of the box, flashing twrp recovery and rooting can easily be done but you will not be able to flash the ota successfully as it checks and requires stock recovery and a unroofed device, that being said you can reflash the stock recovery and unroot and then flash the ota.
Then all you would need to do is reflash twrp and superuser
Sent on my Moto X

Upgrading rooted stock ROM to new stock OTA

My gf has HTC One with latest stock T-Mobile US ROM, unlocked bootloader, is rooted, and has TWRP. T-Mobile is about to release an OTA (source), and I am wondering how to go about installing it. AFAIK, stock recovery is required, AND the bootloader needs to be locked again. If this is the case, re-rooting will require unlocking the bootloader and thus doing factory reset? Is there a simpler way to do this?
Stock recovery and preinstalled apps needed
Bootloader locked not needed
There are many posts written about this read them first
c00ller said:
My gf has HTC One with latest stock T-Mobile US ROM, unlocked bootloader, is rooted, and has TWRP. T-Mobile is about to release an OTA (source), and I am wondering how to go about installing it. AFAIK, stock recovery is required, AND the bootloader needs to be locked again. If this is the case, re-rooting will require unlocking the bootloader and thus doing factory reset? Is there a simpler way to do this?
Click to expand...
Click to collapse
relock your bootloader
fastboot oem lock
and run this RUU
http://www.htc.com/us/support/htc-one-t-mobile/news/
instructions / Download are at the bottom of the page
Everything on the Phone will be lost ..Backup to your PC and google first !
yatindroid said:
Stock recovery and preinstalled apps needed
Bootloader locked not needed
Click to expand...
Click to collapse
FYI I have actually tried running an RUU on unlocked bootloader with stock recovery, kept failing until I relocked the bootloader...

What if: I want to completely unroot, unlock and install OTA

I am currently Rooted, unlocked bootloader, running a 5.0.2 ROM and TWRP. If I just wanted to unroot, lock boot loader and star from scratch. Meaning, accept OTA, unlock bootloader, root and install TWRP. Is this possible?
Yes.
If you want to make it easy
http://forum.xda-developers.com/showthread.php?t=2947452
Sent from my Nexus 6
Xirix12 said:
I am currently Rooted, unlocked bootloader, running a 5.0.2 ROM and TWRP. If I just wanted to unroot, lock boot loader and star from scratch. Meaning, accept OTA, unlock bootloader, root and install TWRP. Is this possible?
Click to expand...
Click to collapse
I wouldn't re-lock these devices ever... maybe if you sell it or turn it in. Too risky. Just use Wugs from that link, once 5.1 is there, flash it using his toolkit. Then root. Done.
I can't believe the amount of threads here and in the Nexus 9 board where guys are bricking their devices due to that darn "OEM unlock" being unchecked.

Relock and Unlock bootloader with LineageOS installed?

I have a Mi5 running LineageOS 14.1
I flashed this ROM a few months ago without the optional root package, so (obviously) there's no root access. However there's a few apps that will not open if root was detected, and while the ROM doesn't have root, I think the apps knew the bootloader was unlocked. So I was wondering if it's possible to relock the bootloader, and then unlock it again if I need to change the ROM.
Can this be done? I flashed the ROM with TWRP; however I didn't keep TWRP as a permanent recovery so it should be running the stock recovery.
Steve977 said:
I have a Mi5 running LineageOS 14.1
I flashed this ROM a few months ago without the optional root package, so (obviously) there's no root access. However there's a few apps that will not open if root was detected, and while the ROM doesn't have root, I think the apps knew the bootloader was unlocked. So I was wondering if it's possible to relock the bootloader, and then unlock it again if I need to change the ROM.
Can this be done? I flashed the ROM with TWRP; however I didn't keep TWRP as a permanent recovery so it should be running the stock recovery.
Click to expand...
Click to collapse
I think you shouldn't. You can't unlock bootloader if you not on miui. And one mi account can unlock bootloader only once on 30 days.

How to go back to stock and relock the Bootloader?

Hello
i have to sell my device so i want to get it to stock again.
My current Setup:
Bootloader Unlocked, Stock Recovery, Rooted with Magisk, Stock ROM 9.0.0.283
What are the Steps to go Back to Stock and wipe everything?
Ive read that if the bootloader relock again it is not able to unlock the second time? Is this correct? I want to get the Unlock Code to the person who buy it but if its real, he cant use the code anymore..
anyway is it possible to do the job with the Stock E-Recovery in the current state of my phone? Without bootloader Relocked? Or is it necessary to relock the bootloader again?
Thank you very much
blackst225 said:
Hello
i have to sell my device so i want to get it to stock again.
My current Setup:
Bootloader Unlocked, Stock Recovery, Rooted with Magisk, Stock ROM 9.0.0.283
What are the Steps to go Back to Stock and wipe everything?
Ive read that if the bootloader relock again it is not able to unlock the second time? Is this correct? I want to get the Unlock Code to the person who buy it but if its real, he cant use the code anymore..
anyway is it possible to do the job with the Stock E-Recovery in the current state of my phone? Without bootloader Relocked? Or is it necessary to relock the bootloader again?
Thank you very much
Click to expand...
Click to collapse
Ask the buyer if they want it locked. Personally it wouldn't be worth my time if it couldn't be unlocked again. Better to check first..
If you want to lock (not relock) bl justdownload your adequate firmware from androidhost.ru and flash fw using Usb-otg method.
You can unlock/lock your bl using unlock code anytime you want (provided you haven't changed your mainboard in the meantime).
forever_lol said:
If you want to lock (not relock) bl justdownload your adequate firmware from androidhost.ru and flash fw using Usb-otg method.
You can unlock/lock your bl using unlock code anytime you want (provided you haven't changed your mainboard in the meantime).
Click to expand...
Click to collapse
Hi is it possible to do the following..
Adb relock bootloader in my current state?
In my opinion the relock of the bootloader restore system to default over the erecovery or is this wrong?
Many thanks
blackst225 said:
Hi is it possible to do the following..
Adb relock bootloader in my current state?
In my opinion the relock of the bootloader restore system to default over the erecovery or is this wrong?
Many thanks
Click to expand...
Click to collapse
I thought you wanted to go back to stock. I've already gave you solution to bring back all the way stock.
I m not sure if it's even possible to re-lock bootloader using fastboot when you're on pie.
Bootloader status re-locked still means your warranty is void.
forever_lol said:
I thought you wanted to go back to stock. I've already gave you solution to bring back all the way stock.
I m not sure if it's even possible to re-lock bootloader using fastboot when you're on pie.
Bootloader status re-locked still means your warranty is void.
Click to expand...
Click to collapse
Hey I've tried this otg method but without success
If I try it with the dload folder option and try to force flash the emui updater throws an error.
Even with the dialer code method.. same..
I'm not able to get it to stock.
I've tried the Huawei suite on PC and phone in fastboot mode..same..massage this phone can't be reset or so..
What can I do next?
Current state, halfway working phone that's boot into os 2 times from 10 reboots.

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