Q. FILO loads my ELF kernel fine, but complains "Verify FAILED".
A. Try the newer version of mkelfImage instead of the one from the
   freebios tree. It's available at ftp://ftp.lnxi.com/pub/mkelfImage/ .

Q. LinuxBIOS (v1 tree) crashes or fails to verify checksum when booting FILO.
A. Make sure you are using the latest source of LinuxBIOS. It had a bug
   that interferes with checksum calculation, until recently.