How to Unroot,lock OEM and make phone as it was! - Samsung Galaxy M30s Accessories

Can someone help me lock the boot loader I have unrooted it but not able to lock OEM

best way is to flash the original official firmware through odin .

Have you managed to lock it? I'm thinking of unlocking the bootloader but only if there is a way to relock it again.

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[Q] How do I relock the bootloader of the XT1092?

How can I relock my bootloader (XT1092) please? I know how it is done in theory ("fastboot oem lock begin" + flashing the factory image + erasing user data/cache + ending with "fastboot oem lock"), but it just does not work - I am getting a "not signed system error" with the stock firmware for the XT1092 which I grabbed from a link in the xda forums.
Motorola published only the factory image for the XT1095, I know that too. So is this the problem, that the captured firmware (not from the Motorola website) of the XT1092 is not validated for the procedure to relock the bootloader of the XT1092?
Thanks in advance for any tip!
same problem here, Ive tried flashing the lollipop firmware but I couldnt relock. I get this problem
SST lock failure!
Now Im downloading, RETEUALL_XT1092_4.4.4_KXE21.187-42_cid7_CFC.xml.zip
and Ill try with it... no idea...
any help?
it's very important because I need to give the phone back to amazon.
What do you suggest, give it back with unlocked bootloader?
I can put the stock logo bin so they cant see the logo that tells that the phone is unlocked, hoping the man doesnt watch the bootloader screen

relock bootloader

anyone know how i can relock the bootloader and re-enable FRP?
is it basically flashing the stock firmware from HuRupdater.zip in twrp
then rebooting into bootloader and issue the relock command
then in boot disable OEM-Unlock?
Hey did you manage to do this?
Anyone manage to do this ? I just unlock my bootlader but havent done anything yet.
virtyx said:
anyone know how i can relock the bootloader and re-enable FRP?
is it basically flashing the stock firmware from HuRupdater.zip in twrp
then rebooting into bootloader and issue the relock command
then in boot disable OEM-Unlock?
Click to expand...
Click to collapse
Did you ever found this out? I want to unlock the bootloader, but only if I can relock it, because if it's unlocked, the sale value drops. Let me know please =D
Without knowing if it's possible I wouldn't risk it, who knows if Huawei doesn't allow it and you're going to end up with a bricked phone.

Relocking bootloader

Hello guys,
After i tried a few different roms around here, i came to the conclusion that stock rom works the best for me.
I managed to revert back to stock rom BUT, i am not able to lock the bootloader to its factory state.
Relocking the bootloader via fastboot won't get rid of the message screen that bootloader is unlocked during bootup.
If anyone knows how to get the device back to its original firmware state, please share it with me.
My device is : VTR-L09C432.
Thank you!

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.

Question Relock Bootloader/Downgrade firmware

I am planning to return this phone to buy a xiaomi fold 2 but since I am rooted and bootloader unlocked I would need to relock the bootloader before I return it.
I would imagine I would need to downgrade back to the exploitable version to relock it as I am currently on12.0.16.6 but im not sure how as the OTA update zip isnt the standard partition image format im used to so I cant just do dd if=/xxxx.img of=/dev/xxxx
I already have the 12.0.13.6 firmware downloaded im just not sure how to get it back onto my phone.
Any help would be appreciated thanks
nevermind. The bootloader is now locked
I booted into EDL mode and soft bricked after booting out of it but it did relock the bootloader so I can now return in peace (for anyone wondering it was fastboot oem reboot_edl) I would not recommend running it at all though as you need to download new firmware from vivo recovery just to make the phone usable again.

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