bootloader unlock

I want to unlock the bootloader of the Mi 11 Ultra, its motherboard was changed. I tried the official way, which is through Mi Unlock and I couldn't, it says that the cell phone is not registered on the server or something like that, any ideas? edit: I did some research and saw that I have the...

I wanted to unlock the loader, but when linking the phone to the account, it gives an error. How fix it?

Hello, I want to unlock my Redmi 12C for changing Global ROM from China ROM. But I cannot unlock it with the "Mi Unlock Tool" on my PC. The error message shows "Please add your account in MIUI's settings > Developer options > Mi Unlock Status". I also log in Mi account on my phone and also...

Hello everyone. I have a Redmi note 9 (Android 12, MIUI13). Ive been trying to unlock the bootloader so i can root my phone, but even though i have tried so many guides, every time i go into Mi Unlock and connect my phone (yes, usb debugging is on, OEM unlocking is on, my phone is in fastboot my...