Hi Dennis,
This is where we keep our firmware: https://github.com/TI-ECS/ti-utils/tree/master/hw/firmware
WL12xx Build script here: https://github.com/TI-ECS/build-utilites. Please follow the instruction on this page: http://processors.wiki.ti.com/index.php/WL12xx_NLCP_Build_Instructions
You can always roll back the driver/firmware to a specific version by doing git --reset
Do you know the revision of the WG7310 you are using? The latest driver/firmware only support revision 3 (or rev C or PG 3.0). The driver used should be ol_R5.SP5.01, and firmware used should be 6.3.8.0.111