I found english downloads:
Firmware version 0904:
http://support.asus.com/Download.asp...SNBAP_0904.zip
Drivers OR_I_WIN8_WIN7_64_V301:
http://support.asus.com/Download.asp...N7_64_V301.zip
Instructions:
http://support.asus.com/Download.asp...structions.zip
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On one of my Varidrives it worked like a charm. However, when I got back home and tried in the second unit, I got this message (after that screen it goes right back to "enter serial" screen):
Here's another result I got (again, it goes back to serial entry screen):
