went to Gigabyte Support for your models GA-MA770T-UD3P version 1.0 - 3.1. None of those motherboards shows the FX8350 as being compatible.
Motherboard version 3.1
Motherboard versions 1.0, 1.1, 1.3, & 1.4
If you have version 3.1 you might want to open a Gigabyte Support ticket and see if they have a BETA BIOS that would make your FX8350 compatible to download. Otherwise you are out of luck and would need to either upgrade your motherboard or downgrade your FX8350 to a FX8140 or for lowers motherboard versions (1.0 - 1.4) FX4130.