[QUOTE=pozzo;2201031]I can’t upgrade DRW-20B1ST’s firmware officially, but why???[/QUOTE]
Nice burn log - as long as your burn completes successfully, I wouldn’t worry about the “KEY_ILLEGAL_REQUEST” thing, my Sammy 182D (IDE) does it all the time with successful burns
About the firmware: what revision are you trying to update to, and how are you going about it (I don’t know much about Asus firmware, is it just a regular .exe file?).
Flashing in Safe Mode might be an idea - I do that myself just to reduce the amount of stuff running in the background.