Troubles after updating SonyDRU700-A

Last week I updated my firmware up to VY08E and eversince the DVD-drive doesn’t read ANYTHING at all. The player can be found in my explorer, but as soon as I try to connect it says: ‘NO DISK in DRIVE’.
Nero Infotool detects everything but still it won’t work!
Going back to versions up to VY05E didn’t work either, up to now it has version VY06E.
Yep I set the DMA option to PIO when flashing and put it back on after the total reset.
Who can/will give me advise? I didn’t find anything clear and satisfying in this forum yet. :cool: