Fiat Punto 1.2 Marelli IAW59F.M3 Virgin

[antonis132]

Hi on a Fiat Punto 1.2 model 2000, i replaced ecu Marelli IAW59.M3 read eeprom from old ecu, save it, read the eeprom from the new used ecu saved it, load and write eeprom from the old ecu to new used ecu failed on writing. Then try read eeprom, tool make it virgin still car don't start. Maybe my tool can't do successfully virgin. Could someone make virgin new ecu eeprom so as car starts?

[Antonio266]

That's because your Original ECU is HW603 and the new one is HW023, they're not compatible.
You must buy a replacement ECU with same HW number (HW603).

[antonis132]

When i bought it shop says don't accept return
Is there a way to make it work and car starts?
If i read flash from old ecu to new ecu then can i write successfully eeprom so as car starts?

[antonis132]

just did it on the car, bad decision do it on the bench