Kidding (though this is gettng GRRRRR NOW, and ready to give it all up!!)
In built ERLS on a betafpxf41280sx board over SPI. Setup right in BF (4.3 RC6), I got it working briefly. The RX I believe is “updated” along with BF so no update until RC7, etc I guess. I ste a binding phrase with the CLI and used the “bind” option on RX and TX. I breifly got it seeing the stick movements, but it didn’t survive a reboot (and yeah did press save etc). I believe any 2.x version of ELRS will work together (have 2.3 on the TX), not sure what version is on the FC, but it’s at least 2. Below is a copy of a post i made:
Hi all. I’ve just got a DarwinFPV tiny ape, and struggling to get the RX to work. Have set up a few quads with seperate RX’s in the past, and my TX (Happymodel ES24TX 2.4GHz) and all the others are on 2.3 of ELRS with a bind phrase all Good. The TinyAPe is built in ELRS (FC is betafpxf41280sx). I flashed BF 4.3 RC6, and used the online thing to set the binding phrase on the CLI. I got it briefly working once between reboots, but just can’t get it connected again from the radio (setup a new model, Original TX16S with edgeTX 2.5 (or 2.6)). Any suggestions? I’m not sure what RC6 has as ELRS version built in, but I am lead to believe as long as all 2.x it’s OK.