I updated the firmware the normal way no problems aswell.
The usb drive (not a usb-stick) came in the playon workgroup as a usb-hdd1.
so i could see it on my pc. (it was only read-only)

only issue until now is that probably 1080p upscalling is gone.
because two dvd`s were lower in quality then before but in order to check that
i`ve to put the last firmware back and look closely at the quality.
(maybe my eyesight gone worse ).

then after that i will do a manually upgrade and reply here about this.

so if anyone is gonna test this firmware please check quality for dvd format like,
*.iso , *.ts etc.

HD quality is still very good.

update to this reply of mine!!!

downgraded it and got punished see topic:
viewtopic.php?f=42&t=2552&p=10580#p10580

EDIT 20-11-2009: gonna lock topic as there is now a official release.
here viewtopic.php?f=44&t=2804