If you have AM3 870-C45/C45 V2 then you are limited to at best Thuban CPU. You need AM3+ FX version (870-C45 (FX)) for FX CPU with appropriate BIOS update for FX-8350.
Edit: So if what appears to be you have original AM3 870-C45 then NO FX CPU for you.
Edit: So if what appears to be you have original AM3 870-C45 then NO FX CPU for you.
