I've got a Nokia 3330 that started saying "Contact Service" on it for no apparant reason. I have never done anything thing like flashing it or whatever.

I bought a M/FBus cable and a DCT3 Flasher cable. Using Eeprom tools it says that the MCU ROM Checksum failed but everything else is fine.

How do I fix this and what other software do I need?

Do I need to flash my phone, or do something with this FAID thing?