Hello!
Successful BIOS flashing on a MSI 890FXA-GD70 (MS-7640): http://www.msi.com/product/mb/890FXA-GD70.html
I successfully flashed to BIOS version 1.70 a while ago and now to 1.80. See the MSI homepage for details, here are the BIOSes: http://www.msi.com/product/mb/890FXA-GD70.html#/?div=BIOS
This is a nice link for MSI mainboard owners and Linux users: MSI-Forum: Flash your BIOS, the Linux way! [beware the dangers!!] http://forum-en.msi.com/index.php?topic=138659.0
Take a look at the text file (flashrom output) in the attatchement. Please add the MS-7640 aka MSI 890FXA-GD70 to the list of supported mainboards.
Thanks, Andreas aka Linux User #330250