EEprom works like a mac address. Say if your mac address is banned from some where, the only fix for this is to change your nic card because you cant manualy change your mac address because that is the burned address on the card, same thing with your EEprom you cant change its serial # the only fix is to change the chip itself. but i dont think your friend would be very happy about you ripping his EEprom out.
(i think thats how it works), pretty positive tho