Awwwww.... why did you tell me that
I feel like a shit for ruining your Christmas but here goes. At the moment there are no 4GB nano clones. Due to limitation they can only support a maximum of 2GB. Anything over 2GB has a memory chip that has been manipulated by way of a software hack to read as larger than it's true size.
Have a look at this.
http://www.mympxplayer.org/hotmale16...nz-vt2786.html
There are also heaps of other posts in the forums about hacked players.
A Blacklist of Hacked player sellers.
http://www.mympxplayer.org/bad-selle...list-vf15.html
How to check you player:
http://www.mympxplayer.org/feedback-...rs-vt2828.html
How to remove the hack:
http://www.mympxplayer.org/how-to-re...ck-vt2400.html
These are great little players and it is such a shame that there are so many crooks out there ripping people off. sorry dude