Hello everyone, I am having some trouble getting my receiver(r-xsr) and transmitter(jumper t lite) to bind. They used to work fine about a  year ago, but then I stopped flying and came back to not being able to get a connection or bind. I have gone through three different receivers and many versions of firmware for both, and I am absolutely vexed. I have dumped many hours into figuring out this problem and this is my last hope. Any help would be greatly appreciated.

its a plague the best you can do is save the time for elrs, a 20$ module and receivers for 10$ while everything is fantastic compared to an old rxsr. its time to stay away if you already lost hours.
i would suggest a new route where functionality is much better and support from community and by developers much better.

I'll second Hugs suggestion. As long as your Rx and Tx are the same major version (and preferably you have a bind phrase setup), ELRS just works, no hassle. You set it up once and ignore it forever more if you want. Just make sure every new quad you add to your fleet has the same bind phrase and major version. if it binds tomorrow it will likely still bind in five years.