Bitmap Hunter is a homebrew program for Sony PSP designed to hunt, and directly edit monochrome or 256 colour bitmaps within firmware files for electronic devices so they can be user customised.

This one was inspired by HACKBMAP.EXE by Datrex, a DOS application used to hunt for bitmaps within Garmin Etrex GPS firmware files.

http://forums.qj.net/psp-development-forum/148766-bitmap-hunter-v3.html