Have a look here:
http://www.mympxplayer.org/glacier-r...evc-df621.html.
There are a LOT of firmware files in there, including:
* 1x 9.1.51 and
* 4x 9.1.50 firmware
Hope that helps.
REMEMBER though, there is NO WAY to guarantee that this firmware will work for your player, or is compatible. Worst still, it could render your player into a 'dead' player as well. So please be warned.