I just recently added firmware extraction to cocoboot (to get palmtx wifi FW, just tap on the Dump Marvell WiFi Firmware in the pulldown menu). For now it works probably only on palmtx. Thanks to kEdAR, you can download the new version here http://kedar.palmlinux.cz/test/cocoboot-git20080702.prc

(btw. someone feels like fixing prc-tools for amd64, newer gcc etc. ? maybe you can reuse your wifi bounty for that ;-) )