I have great problem now!
I bought my Mi4C some months ago, and I flashed the dev rom at the beginning, using the built-in root function.
I was using it happily, until one day, after flashing a new rom, I found that there is no root anymore.
So, I followed the instructions, apply for unlocking the bootloader.
After 3 weeks of using the phone without root, I got the unlock code finally.
Then I found that it's a nightmare.
I am in a deadlock.
To unlock, I have to sign in Mi account in the phone.
However, I have frozen the Xiaomi services already when I first used the phone.
Now, I don't have root permission to unfreeze the Xiaomi services.
So, I cannot sign in my Mi account, unless I hard reset my phone.
I find this really ridiculous!
At the first place the phone was not locked.
Suddenly it is locked, and I have no way to unlock!
What is the best way to solve my problem now?