BEWARE.
Be careful when getting bios F3A.
I have just lost my motherboard trying to flash this using windows based @bios.
The bios actually flashed ok but it wouldn't restart. After leaving it overnight I forced a restart this morning and the board is now completely dead.

So much for Gigabytes dualbios thing
I'm not too happy about this as you can imagine, so I will take it up with the retailer on monday.
According to the book the only reason this should happen is if the incorrect bios is applied. The Japanese site and @bios both said it was for the 790FX, so I'm not sure what has happened.
Anyway just be careful if you are going down the same route I took.
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