Look here: MPPS cable ECU reading instruction
Vehicle: VOLKSWAGEN -> GOLF IV -> ME7.5 -> 1.8Turbo
Select the Make
Select the Model
Select the ECU TYPE
Please read the comments section
For example if this ECU was read and the flash was remapped you must checksum in you tuning software. Alternatively if your have not purchased checksuming of the ecu most remapped files can be checksumed by MPPS. The note on this car indicates that if the immobilizer in the dashboard is blocking flashing access to remove the Dashboard (Kombi) FUSE.
PAY Close attention to the ECU type. If the ECU type is not found you can likely find it under another model. For example selecting Audi -> A4 -> 1.8 Turbo Bosch ME7,5 selection could also be used to read this ECU as the hardware is the same.
Press “Ecu ID” to id the ecu. MPPS will be its best to perform a proper ECU ID. In some cases due to variations in data structure the exact versions are not shown even on a readable ecu…
Press the “Read” Button. MPPS will now attempt to read out the ecu data
Upon successfully reading the ECU. MPPS will prompt you for the location to save the file name
Continue to follow the instructions and switch off the key
Turn on the key and press continue
MPPS will perform any post reading requirements if needed by that ECU model.