Help Please I don't understand...
 

hi well I just buy a mp4 so I'm new.. I have some question like what's a firmware?? and how I can change the theme on my mp4??? thanx

Cinderella_17, The firmware is the software that runs your player much like Windows is to your computer.

Theming your own firmware is safe using someone elses already themed firmware is not.
To theme your player you need the following resources:

You need to first extract your firmware from your player using s1fwx.
Download HERE
Guide HERE

Then you can change the images using s1res
Download HERE
Guide HERE

Then reload your firmware to your player using MP3 Player Utilities Update Tool
Download HERE
Guide HERE

You will find a great selection of themes HERE