Looks like shuttle deliberately took the PIF testing out because they sell drives with a wide variety of quality?
IIRC many OEMs buy original equipment from the factory with little or no quality checking and perform that quality checking themselves - thats the main reason they get the stuff much cheaper than the Retail customer. They also have a short warranty period to return those equipment. If they dont take the testing serious but rather do a "it works" test, the customer in the end may have a BenQ drive but Shuttle tested ... which basically means he may get a good or bad device.
So, I am sorry for this and maybe this firmware should be added to a "Caution - bad firmwares" thread. I hope flashing back will work and apologize for the inconvenience.