How to ensure phone is not bricked when re-locking bootloader

[mitosis]

I am using Redmi Note 12 turbo, with bootloader unlocked, and previously using EU rom. Recently, I flashed the phone with the china ROM (miui version: OS3.0.1.0.VMRCNXM, fastboot stable) as some banking apps cannot be used on EU rom. Afterwards, the banking app works, but google wallet doesnt (may be caused by the unlocked bootloader) .

To prevent future issue, I plan to re-lock the bootloader using the "fastboot oem lock" command. I have 2 related questions:

1) How do I make sure that my phone will not be bricked?
2) Will this reset and erase the data on my phone?

Thanks for your attention!

 

[gogocar62]

1,
You can only lock the bootloader in the following cases:
- CN devices with CN ROM
- Global devices with any Global ROM derivative (MI, EEA, RU, TU, TW, ID, IN, etc.)
- Product Authentication: https://www.mi.com/global/verify#/en/tab/secur

2,
Locking the bootloader will wipe all user data.

 

[mitosis]

1,
You can only lock the bootloader in the following cases:
- CN devices with CN ROM
- Global devices with any Global ROM derivative (MI, EEA, RU, TU, TW, ID, IN, etc.)
- Product Authentication: https://www.mi.com/global/verify#/en/tab/secur

2,
Locking the bootloader will wipe all user data.

I think the phone is a CN device with CN ROM, but i just want to ensure it is 100% correct before proceeding to bootloader re-lock process.

 

[mitosis]

I just realized that my phone is flashed with hyperos instead of miui, will it affect the booloader unlocking process?