Here you go. Found I didn't need them in the end, when I did the WinCE upgrade, it fixed the uBoot issue I had.
http://users.tpg.com.au/mel4pau1/avic/uboot_f900.zip
I'll leave it there for a while but it's not a file sharing service, I don't have any accounts set up for that. Can't guarantee it'll be there in a month!