porsche me7.8 eeprom checksum

[atomiczen]

Need to change vin on 0261206579 porsche 996 ecu eeprom but i see have checksum
here file ori and with vin changed, there's someone know how calc checksum on eeprom?

[morgano]

Need to change vin on 0261206579 porsche 996 ecu eeprom but i see have checksum
here file ori and with vin changed, there's someone know how calc checksum on eeprom?

On file with modded vin put....

Offset 0x5E -> F4
Offser 0x6E -> BB

And done.

[atomiczen]

On file with modded vin put....

Offset 0x5E -> F4
Offser 0x6E -> BB

And done.

i searched old me7 pdf yesterday and i found the simple calc at the end of the row, thanks morgano for the input.