Lock bootloader and remove twrp - OnePlus 7 Pro Questions & Answers

I am on 11.5.1 stock build rooted and twrp installed and decrypted. I am selling the device so wanted to know how to remove twrp, root and lock bootloader.

Wrong ROM installed
Need help! I have a Oneplus 7 Pro Global For a distraction I installed the rom 12 beta (India) Now the device does not update anymore, I cannot go back to stock, the bootloader does not accept being unlocked, even with the options set in the...
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Question about Fastboot + Miflash + Unlocked Bootloader using unofficial method!

Hello everyone!
I bought a mi 4c from gearbest which came with a custom\unofficial possibly full bloatware rom, because of this i decided to install the last version of miui for mi 4c from xiaomi.eu! To do this i had to unlock my bootloader, yes my bootloader was looked because before i thought about xiaomi.eu rom, i had installed the lastest stable chinese rom by using the rom updater which i think that it looked the bootloader when i did this. I don't know if the bootloader was looked or not while i had that custom rom on the phone because i did not check it.
So my bootloader was looked and i wanted to install TWR to install the xiaomi.eu rom because of the international support and because of google services and play store which i had tried to install in the chinese stable rom but i had failed miserably to do so! So i want to install TWR but i did not want to wait for the sms with the code to unlock my phone because i had read people complaining that the code takes a long time to arrive and etc! So to solve my problem i used this unofficial way to unlock my bootloader -> http://en.miui.com/thread-247961-1-1.html <- which worked and i got my bootloader unlock, installed TWR and the lasted xiaomi.eu rom for mi 4c
/\ I regret using the unofficial method to unlock my phone, because two days later o got the sms with the code Haste is the enemy of perfection!
But now i want to go back to stable chinese rom because my phone is overheating and throttling a lot and also the GPS works really bad which it did not on the chinese rom!
Now for the doubts:
1 - If i use Fastboot + Miflash to flash the last stable chinese rom, is there the risk of bricking my phone? Because of the way i had unlocked my bootloader i mean?
2 - Is there way to lock the bootloader again, so i can unlock it the right way? I mean using mi unlock and the code that i've received? It will make any difference using the official way in relation to the unofficial way, it will be worth it i mean?
1. only risk is you have a power blackout
2. you can, fastboot oem lock
Hi! Please I really need your experience
I will receive my new Mi 4c with the Bootloader Unlocked from the re seller , Rooted and with Multi language ROM.
Do I have to unlock the bootloader with the official method (which means flashing Cina Dev ROM -to re lock the bootloader- and go on with the Xiaomi's code procedure..) or it is possible to get all things done as soon I get my device by choosing an unofficial weekly miui.eu international ROM and install it normally from the Updater app but also be able to update it every week via Updater without issues?
My problem with flashing is that I don't have my laptop and the one I have now runs win xp.
não-soi-jo said:
Hello everyone!
I bought a mi 4c from gearbest which came with a custom\unofficial possibly full bloatware rom, because of this i decided to install the last version of miui for mi 4c from xiaomi.eu! To do this i had to unlock my bootloader, yes my bootloader was looked because before i thought about xiaomi.eu rom, i had installed the lastest stable chinese rom by using the rom updater which i think that it looked the bootloader when i did this. I don't know if the bootloader was looked or not while i had that custom rom on the phone because i did not check it.
So my bootloader was looked and i wanted to install TWR to install the xiaomi.eu rom because of the international support and because of google services and play store which i had tried to install in the chinese stable rom but i had failed miserably to do so! So i want to install TWR but i did not want to wait for the sms with the code to unlock my phone because i had read people complaining that the code takes a long time to arrive and etc! So to solve my problem i used this unofficial way to unlock my bootloader -> http://en.miui.com/thread-247961-1-1.html <- which worked and i got my bootloader unlock, installed TWR and the lasted xiaomi.eu rom for mi 4c
/\ I regret using the unofficial method to unlock my phone, because two days later o got the sms with the code Haste is the enemy of perfection!
But now i want to go back to stable chinese rom because my phone is overheating and throttling a lot and also the GPS works really bad which it did not on the chinese rom!
Now for the doubts:
1 - If i use Fastboot + Miflash to flash the last stable chinese rom, is there the risk of bricking my phone? Because of the way i had unlocked my bootloader i mean?
2 - Is there way to lock the bootloader again, so i can unlock it the right way? I mean using mi unlock and the code that i've received? It will make any difference using the official way in relation to the unofficial way, it will be worth it i mean?
Click to expand...
Click to collapse
1. i suppose no, it will only brick if you have TWRP recovery flashed to recovery partition. My workaround is to never flash TWRP in the first place, but boot to TWRP from Fastboot every time i want to flash something. definitely a hassle but should be guaranteed to work. Never tried though, i am fine with CM ROM and unlocked bootloader.
2. If i read correctly, the latest dev ROM will lock the bootloader back. So if you want to unlock, you must flash the old MIUI version as suggested in the unofficial unlock method again.
raptonicus said:
Hi! Please I really need your experience
I will receive my new Mi 4c with the Bootloader Unlocked from the re seller , Rooted and with Multi language ROM.
Do I have to unlock the bootloader with the official method (which means flashing Cina Dev ROM -to re lock the bootloader- and go on with the Xiaomi's code procedure..) or it is possible to get all things done as soon I get my device by choosing an unofficial weekly miui.eu international ROM and install it normally from the Updater app but also be able to update it every week via Updater without issues?
My problem with flashing is that I don't have my laptop and the one I have now runs win xp.
Click to expand...
Click to collapse
you can unlock via unofficial method. Win XP should be able to flash it. CMIIW though
Thanks but it's not necessary anymore ..I've changed the Mi4c with Mi4.

Lock bootloader of OnePlus 6

Hey guys,
I'm on Android 10 beta i was rooted, unlocked bootloader and Magisk installed.
But now after 10 i dont want to root my device again as i used magisk for xxx no limits and it has been discontinued.
Anyway, i want to lock bootloader how can i do that?
I want to lock bootloader because -
1) Can't install netflix
2) No use of it now.
3) PIP mode doesn't work for Hotstar
First of all xxx is not discontinued.
Secondly you can use Netflix on rooted device.
Anyways, use msm tool but it's gonna wipe everything.

Pass safety test for GooglePay with original FW (Bootloader unlocked)

I came back from Xiaomi.eu rom to the official Android 11 FW from Xiaomi.
Bootloader is unlocked, I did not root my device.
Feankly speaking I don't need my device to be unlocked or rooted, I am quite happy with the stock FW.
I can't use Google Pay, my safenet status is not pass. If I lock my bootloader will it come back then?
Thanks for your help.
GermanGigaDepp said:
I came back from Xiaomi.eu rom to the official Android 11 FW from Xiaomi.
Bootloader is unlocked, I did not root my device.
Feankly speaking I don't need my device to be unlocked or rooted, I am quite happy with the stock FW.
I can't use Google Pay, my safenet status is not pass. If I lock my bootloader will it come back then?
Thanks for your help.
Click to expand...
Click to collapse
did you relock the bootloader and get gpay to work again? (global rom?) thanks

Question TWRP for Oneplus 9?

Today I tried to install twrp from this link
Install TWRP Recovery on OnePlus 9/9 Pro [Android 13]
In this comprehensive tutorial, we will show you the steps to install the TWRP Recovery on OnePlus 9 and OnePlus 9 Pro devices.
www.droidwin.com
I have the CN version (LE2110 ) with Oxygen 11.2.9.9.LE25AA. I was able to make it unlocked but on the step where I am in the temporary TWRP I can't now browser to any files I copied before. I have no access to the SDCARD, to flash TWRP permanent.
Is there another workaround to get TWRP running on the OP9 and root it after?
thanks
Andy
Great the twrp from op9 pro works perfecet. magisk and root as well. thanks very much for the great work.
Is there a way to disable the unlocked message which appears on the boot?
what happen if I lock it again? does TWRP and root work then?. Bit scary to try as yesterday I was hanging in a boot loop with trying twrp...)
thanks
I unlocked the bootloader with adb fastboot flashing unlock.
what do you mean by MSM?
right now I am on stock rom with all updates, TWRP with Magisk and root.
should I look the bootloader with ad fastboot flashing lock ? Do I still have TWRP and Magisk with root running after I lock the bootloader again?
thanks
Do not ever lock your bootloader with TWRP installed or root! It can and very likely will brick your device! You can only get rid of that message by going back to stock without root and without TWRP and then relock. You have been warned, do not even think about it
Hi,
ok thanks for the information, then I better leave this message,
thanks
Hi,
ok I will leave the message then.
thanks to all for quick support
It is/was "possible" to remove, but the difficulty and risk are not worth it.

What would happen if you install Magisk without unlocked bootloader

I have installed Lineage OS (Android 10) on my phone and TWRP through download mode and ODIN. The instructions I followed had no mention of unlocking the bootloader but it worked. I did not check the bootloader prior to the process nor did I find anything in the settings menu indicating anything about the bootloader. I therefore assume my bootloader is almost certainly unlocked but in the interest of being 100% certain that I will not brick my phone, I would just like to confirm with some more experienced members of the community if this is indeed true. Can I attempt to flash magisk using TWRP? If my phone has a locked bootloader and I attempt to install Magisk, is there any hope of recovery or would my phone be completely unusable? Thank you.
Ali_Shaikh744 said:
I have installed Lineage OS (Android 10) on my phone and TWRP through download mode and ODIN. The instructions I followed had no mention of unlocking the bootloader but it worked. I did not check the bootloader prior to the process nor did I find anything in the settings menu indicating anything about the bootloader. I therefore assume my bootloader is almost certainly unlocked but in the interest of being 100% certain that I will not brick my phone, I would just like to confirm with some more experienced members of the community if this is indeed true. Can I attempt to flash magisk using TWRP? If my phone has a locked bootloader and I attempt to install Magisk, is there any hope of recovery or would my phone be completely unusable? Thank you.
Click to expand...
Click to collapse
Which device?
Samsung didn't need an bootloader unlock until i think Galaxy S5.
Also since you already successfully flashed TWRP and lineage, i assume flashing Magisk won't make any difference
S6 Edge (G925F). I flashed Magisk and it worked. I asked on Reddit as well so a guy told me I wouldn't be able to boot a custom ROM or TWRP if my bootloader was locked so it should be okay. Thanks.
The same here I have Samsung galaxy tab a6 and I flashed twrp using Odin successfuly
and install lineage custom ROM without unlocking boot loader and I install supersu and it worked perfectly but l wented to use magisk and for that l fully unrooted SuperSU and flash latest magisk but the problem is here after flashed magisk successfuly rebooted and magisk app icon is not showing up on homescreen I install it manuly from file manager the app icon uninstalled it self again a don't now what I have to do

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