Eeprom accidentally erased?

[Luciano]

What could be worst is that the number don´t just gets erased to FF or 00 but takes
any random number wich means a different configuration for the firmware.

Hi,

This is where the CRC will help you. If the CRC calculated at startup is not the
same as the CRC you have stored in the EEPROM the last time you have written the
settings into the EEPROM, then the system will not start and will display "ERROR".

Best regards,

Luciano