2007 Volvo XC90

eastcoasttuningltd · Post by **eastcoasttuningltd** » 25 Feb 2023, 11:12

I am trying to clone a CEM H to other CEM H I already swapped the EEPROM and the car was a no start. I tried to use vvdi prog for M32C 30855FW and unable to connect to the chip with any pin out I found online. I understand the Pin is in the Flash and no in the EEPROM. is there other tool out there to get this job done?

Post by **yagger** » 26 Feb 2023, 20:59

If you need full clone you have to swap eeprom AND MCU. If you swapped eeprom only and tried to start engine some data could damage. In this case need to restore data and PROBABLY reprogram keys.

eastcoasttuningltd · Post by **eastcoasttuningltd** » 27 Feb 2023, 17:13

swapped Eeprom back to ORI CEM and car is running. i will desoilder MCU and just swap it and then swap the eeprom back over