Hello,
Attached is info for a abit TH7II-RAID motherboard I tried flashrom with. Write failed but the board still boots (-w apparently ended up doing nothing). Let me know if there's something further you'd like me to test.
http://www.abit.com.tw/page/en/motherboard/motherboard_detail.php?pMODEL_NAM... RAID&fMTYPE=Socket+478
BIOS images are available at http://www.abit.com.tw/page/en/download/download_bios_detail.php?pFILE_TYPE=... RAID&pSOCKET_TYPE=Socket%20478 (These *.exe can be extracted by simply unzipping them.)