Prior to tuning or testing it may become necessary to update a vehicle's ECU Calibration ID to another. During the process if you choose an incorrect ROM you may experience a flashing error.
Below are the steps required when changing ECU calibration of the same ID, which is default on the vehicle to another version number, using Pro ECU. I.E changing from 5G0906259F ver 0001 to 5G0906259F ver 0002