Hi.
I just flashed my ASUS-P5B BIOS using flashrom-v0.9.1-r710 and it smells like a success.
First I read my previous BIOS (using flashrom -r) and compared to a downloaded stock BIOS; they were almost identical save a few vendor strings.
Then flashed a new version (with flashrom -w), and reading it afterwards gave back the same data.
Rebooted, and sure enough, the new BIOS version was printed.
Attached is output from 'lspci -vvnn', 'dmidecode' and 'flashrom -V'.
Please let me know if more data is needed to confirm the P5B compatibility with flashrom.
Thanks for the good work,