Can´t update SV-1 OS

[JohnDoe]

Starting out with:
Computer running Windows 7, SV-1 resetted to factory setting.
Downloaded and installed USB MIDI drivers 1.1.3. OK.
SV-1 connected to computer, running SV-1 editor OK.
Turning off SV-1, holding button 1 and 8, turning on, pushing button 1 that starts to blink.
After a while a message read:"SV-1 is not connected", some seconds ago it was running the editor OK!?
Next message: "Cannot find an input port".
Any suggestions?

[Thunder]

Use Ubuntu or an older Microsoft OS.

http://www.korgforums.com/forum/phpBB2/ ... hp?t=53595