This works for me ( gameking clone ):
With power off and pressing Y connect USB to computer - sound from computer and message from windows XP :unknown USB device, asking for driver.
Uncompress this driver kindly uploaded to Rapidshare by
dbg4780 and install it.
http://rapidshare.com/files/90955156...river.zip.html
The ISP driver contain a camera and a webcam driver,install both.
Now you should be able to access the firmware with FMPro for backup.
I myself have been able to install other firmwares, but not getting them to work.
The .sav file are settings from one of the nes games.