Oh, and while you guys were pondering I rewrote my Perl script that makes a proper CG42 out of a BMP file. The previous one you had to do the "mirror" in your image software before saving the file. In this one it does everything for you. You just feed it a 480 x 182, 24-bit BMP, and it spits out a CG42 for you. A super simple way to flash just CG42 on without even making an SBF also dawned on me, but it requires Linux, so I'll save that for a later time.