The name’s the deal – this changes your wallpaper for the XMB, no more, no less.

Changes:

Fixed some lockups during start
Fixed another conflict with wavepapers in “Once per day” mode
added PTF changing/randomizing
Added two PC based (Windows) tools for making propper 01-12.bmp replacements (background behind XMB waves) and perfect 480x272x24 PSP wallpapers you can then use with the Wallpaper-Changer.
Both tools take various image formats in any possible resolution as source images and should make most converting tasks very easy (two mouseclicks, and you’re set )

http://forums.qj.net/showthread.php?t=132296