well i got another ECU after brick 3 ecu for my car its a MR420757 i keep reading and reading i download ecuflash unlucker. run ecu unlocker first then ecuflash and get this inf. this is the correct file for the ecu?

i can reflash to this MR420757 the 97250005 2001 Mirage LS AT rom to eliminate
the chek engine codes..? ??

 

Not sure what your doing but that's a 128k file you downloaded and a 256k your uploading.... That might be an issue right there.

 

Thanks someone already explained
its a mh7202f and the other is a sh7250 that will brick the ecu