MemoryExplorer, as you can associate with it’s name, is a MemoryExplorer/Viewer for the GP2x. It has a small bit of on-screen documentation, and is somewhat dangerous to use.It’s probably possible to erase your nand if you mess with the wrong locations.*WARNING* this program can brick your GP2x if you aren’t careful.

http://www.newimage.com/~rhk/gp2x/