Flash the Amiga's motherboard? How, exactly?
It reminds me of the time I went into an Escom shop in Newcastle (just a few months after Escom had bought Amiga) to buy a hard drive for my A1200 and was told by the Escom store manager that only SCSI hard drives worked in Amigas and they only sold IDE....
Vesalia are very good. You can buy from them with confidence.