Hello guys,

Maybe this is obvious but I'll post it anyway.

I've been having "sensor lost" from my XSR several times during flight. There are some videos talking about this, basically it's a bug and a firmware update to the XSR should fix it. (Yes my gear is always outdated   )

So, I have a proper XSR to servo lead cable with the right connections to use the bottom port of the QX7. Watched YT on how to flash the receivers from the transmitter. Plugged the XSR to my QX7 and then flash external module... and that was what I did wrong. 
I believe that flash external module option is only to use the pins on the JR bay (at least on the latest OpenTX), so I selected the option Flash S.Port assuming S.Port was this new port on the bottom of the QX7, and, voilá, it's flashed.

Then I just rebinded and everything seems to be working. On the next flight I'll see if my "sensor lost" bug is cured