Please note that I am updating the video today to test out new information from FrSky that hints to the notion that only the most recent firmware must be loaded on the devices in order for them to work properly.
The three files I am going to use for this video are here:
R9MM / R9Mini Latest Firmware as of 05-10-19
R9M / R9MLite Latest Firmware as of 05-10-19
QX7 Latest Firmware as of 05-10-19
Please note that these are not the Flex Firmware releases but the standard. I will be using these files during the video so please make sure to follow the video instructions. When the video is finished and published, I will come back and edit this post to include it here as well.