If he had cIOSCORP/DARKCORP 3.x installed, he can fix it. If not there is very little hope. If it is 4.3u, GiantPune may be able to fix it, you would have to send it to him. If he has a nand backup from bootmii you could send it to someone to have the nand reprogrammed.
Most of these 003 errors are unfixable, corps install or GiantPune or a nand.bin is your only hope.