Hi,
the message printed by flashrom is up-to-date and actually tells you what needs to be done. Somebody with the device at hand (maybe you) needs to test it, and "please email a report to flashrom@flashrom.org (mailto:flashrom@flashrom.org) if any of the above operations work correctly for you with this flash chip. Please include the flashrom log file for all operations you tested (see the man page for details), and mention which mainboard or programmer you tested in the subject line."
Nico