There is an EEPROM on Navio2 HAT which connects to pin 27 and 28 of Raspberry Pi 3 board. I read somewhere that this EEPROM is used for auto configuration or Navio 2 board specific ID.
I need more information on Navio2 EEPROM and need to know if PX4 code will work without the EEPROM?
EEPROM on HAT has data about the vendor and its default specs. We never tested Navio2 working without EEPROM, so I can’t advise you something specific.