[Solved] Omnibus F4 v2 Pro + X8R, can not get telemtry on SoftSerial in iNav v1.8

[david-ng-hk]

My Omnibus F4 v2 Pro is clone.
But I use the "OMNIBUSF4PRO" target not the led one as I want PWM5 as a servo output, not LED.

I am using GPS + Mag + SBUS in Omnibus F4 v2 Pro
so if I need to get telemetry, I need to use the CH5 and CH6 SoftwareSerial.
I am flying fixed-wing, only one motor, no idea why can not use PWM2 as softserial (as it is easy to access)

I follow this guide https://github.com/iNavFlight/inav/blob/master/docs/Board%20-%20Omnibus%20F4.md
and this image CH5 CH6 https://camo.githubusercontent.com/9d3b7d01aa83db71c7381054a173c0ca49a2b06b/68747470733a2f2f7374617469632e726367726f7570732e6e65742f666f72756d732f6174746163686d656e74732f372f312f382f302f342f372f6131303236333432372d3130362d4f463450524f56335f3030312e4a5047
X8R SmartPort (stock, no hack) ---> RX (CH5 pad) ---> 1kOhm resistor ---> TX (CH6 pad)
after soldering, Tested with meter, CH5 and CH6 pad is 1k

Enable gps, mag, "cpu base serial port", telemetry, rssi in iNav config.
Then I set the ports tab, gps, mag ok, softserial show up, telemetry type=smart port, rate set to auto or 56700
CLI -> set telemetry_inversion = ON

X9DP discover new sensor, only get 2 ( RSSI [correct value] and RxBT [3.9v? I am using 6s] )
Anyone help?

[david-ng-hk]

sorry, it seems work now, as I forgot to type "save" after the "set telemetry_inversion = ON" in CLI.
I now get 14 sensors in x9d