see this picture !!
MRT Dongle Remove Micloud Worked 100 % 
DONE 10000 % 
WIFI ON - STILL OK !!!!! Steps :
* Use Testpoint
1. Disconnect The battrey from Mobile set
2. Connect Test Point redmi 4a like picture at below
3. Connected EDL Cable to Mobile Set ( Device Manager will be detected 9008 driver )
4. RUN MRT Dongle - Select Xiaomi Tab
5. Press Remove Account
6. DONE !!!
After all the operation has finished, Reset that Mobile set ( Factory Reset )
then all is ok !!!
Have a Nice day !!!