I have a brand new geprc dolphin anolog that I tried to bind normally, but it did nothing. sometimes when I tried, the red light became solid, but the green one still flashed and Betaflight did not detect anything. Help would be appreciated! From what I have read, I need to change the firmware on one or both devices, but the radio firmware is from 2020ish and I don't know why I can't update it with the opentx companion for it's version(working on updating). The receiver is brand new, probably with the latest firmware.

Please tell us exactly which version of the X-Lite you have. Is it the original X-Lite or is it the newer X-Lite S or X-Lite Pro?

Exactly what versions of the firmware have you flashed to the XM+ and your X-Lite. A link to the firmwares you downloaded and the actual names of the files you flashed would be helpful.

It is the original. The XM+ is stock and the X lite is running OTX 2.3.x. The guessed cause is that the radio and receiver are set to different regions, so I am changing the radio to try and make it work.

Yes, you need both the transmitter and the receiver to be on either the FCC or EU-LBT region firmware so they match.

The region for your X-Lite is determined by the firmware on the internal XJT module that is inside your X-Lite. If you bought your X-Lite in Canada then it should have FCC firmware on it. If you bought it in the EU/UK then it will have EU-LBT firmware on it (and an "EU-LBT" sticker on the back).

then the receiver is eu-lbt then? We cannot re flash it because the x-lite has only a module bay, unless the pins on the bottom are for receiver flashing. Is it possible to have a TX that is compatible with both? And is EU-LBT legal in Canada?

If you bought the XM+ in Canada then I would be surprised if it is loaded with EU-LBT firmware. If it was it would have an "EU-LBT" sticker on the anti-static packet that it comes in.

As far as I know, EU-LBT firmware is legal everywhere, but FCC isn't legal in the EU/UK. LBT stands for "Listen Before Talk" which essentially means that the firmware needs to dynamically listen out for and select a clean channel to broadcast on which limits the amount of interference with other equipment that is already communicating on a given channel. It is a legal requirement for RF equipment to do that in the EU/UK when running on the 2.4GHz frequency. FCC firmware doesn't do that and will just start blasting out communications on whatever random channel it decides to use without caring if anything else in the current environment is already using that channel.

It possible that both your X-Lite and XM+ are running FCC firmware, but your X-Lite might be running ACCST 1.x.x firmware while the XM+ might be running ACCST 2.x.x firmware. ACCST 1.x.x and ACCST 2.x.x aren't compatible with each other.

If you have never updated the firmware on the internal module of your X-Lite and you have had it a few years then it is almost certainly running ACCST 1.x.x firmware, so I would try flashing the XM+ to ACCST 1.x.x firmware to match. You can download the latest ACCST 1.x.x firmware for the XM+ by clicking HERE. Flash the XM+FCC170313-RSSI16.frk file from that to your XM+ and then try binding again.
 
You use the 3-pin connector on the bottom of an X-Lite to flash FrSky receivers. The following video demonstrates how to do that...

Is it possible to flash the TX with ACCST 2.x ? (Edit: It is, just a bit tricky at https://www.frsky-rc.com/taranis-x-lite/)

Yes, as you found you can install/upgrade the ACCST 2.x.x firmware on your X-Lite instead (or as well as installing/upgrading to ACCST 2.x.x firmware on the XM+). Just be aware that if you do that you might lock yourself out of the ability to use some whoops which have ACCST 1.x.x firmware baked into the FC which can only be used with ACCST 1.x.x equipped transmitters. If you're not flying any of those FC's or don't intend to then it won't be an issue and updating everything to ACCST 2.x.x (using FCC firmware for Canada) would seem to be the most logical option.

I flashed the ACCST 2.1 firmware to the xlite and it bound. Thank you!

No problem. I'm glad everything got sorted.

Happy flying