http://www.rockbox.org/twiki/bin/view/Main/IriverBoot says that I need
to run mkboot as such to patch the firmware:

# tools/mkboot -h300 H300.bin bootloader/bootloader.bin new.bin

When I try that, I get this:

$ tools/mkboot -h300 H300.bin bootloader-h300.bin H300.bin
-h300: No such file or directory

... do I need a dev version of the mkboot utility?

-- 
Ian Douglas
blogs & photos: http://www.w98.us/