I got the "other firmware p4p800se-deluxe" flashed succesfully using
the socket from p4b533e motherboard by using the uniflash2.05b tool on
a dos startup floppy made in windows xp.
Maybe in 'distant'
future I can try flashing with a newer version of flashrom if I want to
take risks... like maybe try a beta bios etc... but for a couple of
weeks / months I keep it this way.
Here is some output info for my board asked on IRC, I hope it will help
you with the development of flashrom. Thanks for the support and input
sofar. If you like I can also sent you output info of p4p800s-e
"deluxe" which is fixed btw.
grtz
Walter