Homer has released an updated version of RIN, a Gameboy and Gameboy Color emulator for the PSP. The core is based upon Mr. Mirakachis RIN. Changes:

Configuration bug fixed

Press X to set wallpaper (when higlighting it of course)

Added bmp support as wallpaper

Added text showing that the wallpaper was set successfully

http://xn--stjrna-dua.net/psp/rin/