Connection issue between Frsky Rxrs receiver and Frsky QX7 transmitter

So I recently bought a Frsky RXRS receiver ( https://robu.in/product/frsky-rxsr-ultra-mini-receiver/?gad_source=1&gclid=Cj0KCQjwhYS_BhD2ARIsAJTMMQYnMo2hOFe0zv6K4HE8TfVdLbbIY0QePavE66bBtLI9Xdjeo7O4aS4aAkyqEALw_wcB ) and when I try to connect it with my old Taranis QX7 transmitter. Receiver doesn’t bind with transmitter even though I tried and updated the firmware now but still what happens when I press the bind button the receiver doesn’t even goes to binding state( because red light doesn’t even blink ) … does anyone know how to get both of them connected… Also I have also tried ti update my transmitter but the configurator says something like that the current firmware doesn’t support the latest firmware … Please help!!!