Downgrade/Rollback firmware on W810i?

[timebandit]

My datacable should be a DCU-60 that ships with the phone? On the phone end of the cable it has total of 4 usable pins. 3 that are togehter and 1 single at the other end.

Thanks, those are installed but still can't get the USBFlash drivers to install/work? Nothing happens when removing batteri, reinsertit. press and hold C-button and connect the cable to the phone. Nothing happens. If I go to device drivers I can find unser USB Controllers: Generic Flash Device, but this doesn't accept any drivers (ggsemc.sys, ggsemc.inf).