ROM adventurers find this protection becomes troublesome and it makes the flashing process of ROM tricky, even for the stock MIUI ROM. Failed to obey with the security mechanism may lead to a bricked device.
The worst part of this scenario, the broken device cannot be fixed through the ordinary fastboot mode and hence Mi Flash tool becomes useless. Such a situation is where the QPST Tool helpful.
QUALCOMM QPST SOFTWARE PRL UPDATE SERIAL
Serial ports and active client monitoring.It can flash the necessary ROM through EDL mode or Test-point method.