Betaflight and Cleanflight have continued to support the older F1 processor, used most notably in the Naze32. But those days are ending. The developers have officially expressed their intent to end support for the F1 processor. If you have an F1 in your quad, it's time to start thinking about alternatives.
Here's a link to the manual for the Kakute F4 AIO that I wrote, if you're interested: https://goo.gl/jEKygm
