[greggold]

This firmware makes old frsky accst rxs the apparent equal of many expensive newer rxs. I have followed this topic on the Aloft website
https://forum.alofthobbies.com/index.php...-d16.3270/

If you follow the various links from the above link there is the full story of uni available.

I plan to give it a go with a Frsky RX6R rx, which has not been used for a few years. This rx has 2 antennas.  I may have flashed it with ACCESS at some time but it was originally ACCST.
From the Aloft link, I downloaded the recommended uni firmware for this rx:  RX4R_75sm.frk  
(the file name is not a typo, I checked).

I will load this file on my old Qx7 ACCST tx, by taking out its SD card and placing it in my mac, and copying RX4R_75sm.frk to the firmware folder. Then I can attach the RX6R rx to the Qx7 with a cable to its smartport (let me know if anyone wants details on this step) and flash it.

My RM T12 tx has a multi internal module that includes Frsky, (the elrs is the external module) so I will select frsky and then try to bind the rx.

Comments on this plan are welcome. I am unsure if the edgetx software (v 2.8) on the T12 will require  a script. Does anyone know?

I just tried to flash my RX6R rx with the recommended uni firmware RX4R_75sm.frk, following the above steps, but the rx will not flash. When I press "flash smartport" the rx gives a red light, then a green light, then a beep, and I get the message "FW update error. Device data refused." I repeated this with another RX6R rx that I know runs ACCST, but this rx gave the same result and message. Perhaps I am missing something...