cyber062: Welcome to CDFreaks.
According to the link, YSS used the official TEAC updater to crossflash DQ60 to 516E.
TEAC DV-W516E is also used in BenQ DQ60 and Plextor PX-750. If you are really interested, here are some links:
You might also want to try using BQFlasher. Note that crossflashing will void your warranty and since I don't have the drive, I cannot guarantee the results nor whether you can flash back to its original. In any case, let us know how it goes!