since you built this rig yourself, you do have to becareful, if yo do not properly ground the board in the casing, it can shortcircuit the bios or anything else in the board itself. Not only that but why in the world would you hire a technician to flash bios with data YOU provide? if you know how to obtain the bios flashing data, surely you could have went about flashing the boards yourself.
my suggestion to you now is to obtain a tester and see if there are any leaks on the circuits, if so you are SOL, will need to get new board.
remember always wear anti magnetic gloves when handling computer hardware.
i got the tech to update it for because i had no gpu that would work with the f1 bios. it needed to flash to f2 before my gpu would work. i ended up buying an old cheap gpu that worked.
i have a multimeter here, that was gonna be my next step. i also have a gas soldering iron and if all else fails im going to solder in new bios. im going to fix these darn boards if its the last thing i do.