Just a quick post as there seems to be a bunch of versions of the omnibus versions floating around, some are geniune, others are fake. As of this post you do not want to be flying on anything older than the omnibus F4 V3 as V1 and V2 both have had their share of issues. The images below will help you identify a v3 so you can be sure you have the correct board you ordered. These are the official omnibus boards, so some fakes might be different.
Omnibus F4 (standard) V2 and V3
The left image shows the Omnibus F4 V2, while the right image shows the Omnibus F4 V3 (thanks to teralift for the pics)for the pics)
Omnibus F4 V3 (standard) Pinout
Omnibus F4 Pro (V2 and V3)
Omnibus F4 Pro V3 Pinout
