CHODE, As "avionik99" has pointed out anything over 2GB in these players is a fake with a hacked memory chip. The tool you used has removed the hack and now you player is reading it's true size.
There is a list of chip numbers and their sizes Here:
http://www.mympxplayer.org/samsung-a...rs-vt1692.html
A blacklist of traders selling these players here:
http://www.mympxplayer.org/bad-selle...list-vf15.html
Detailed findings here:
http://www.mympxplayer.org/hotmale16...nz-vt2786.html
Re the firmware s1mp3.org have been working on an open source firmware replacement (SWAN) for over 12 months you may like to check their wiki and site for details.