INAV Version - 7
Radio - Taranis x9 lite
Radio firmware  version - 2.3.15-otx (1004ef7c)
Rx - frsky r-xsr (non access)
FC - matekf722se
wiring - fport to TX2

Ports tab,
   

Receiver tab,
   

Currently INAV is recognizing my radio movements in Receiver tab.

• How do I know if my fport setup is correct and telemetry from FC is receiving at radio? I went to TELEMETRY page in radio and looked under Sensors, when I connect a battery to quad I can see VFAS shows correct battery voltage also Curr shows 1.5A (probably because VTX got turned on) 
  

• How do I  gets OpenTX-Telemetry-Widget (https://github.com/iNavFlight/OpenTX-Telemetry-Widget) installed on the radio?
  

Note: I had this whole thing setup years back and was working too. But after a radio upgrade I think I lost all.

I made some progress,

Downloaded https://github.com/iNavFlight/OpenTX-Tel...v2.2.4.zip and extracted. Copied SCRIPTS and WIDGETS to the root of radio's SDCARD.

Then from the home screen of radio, press and hold page button and got the INAV telemetry screen showed up and some data such as GPS Sats, battery voltage, gps coordinate I could validate.


I will dig more.