How to flash the firmware for SuperP 14CH diversity RX

Please see the attachment to download the firmware for SuperP 14CH diversity RX (three versions).

ELRS SuperP RX 2400_RC1.bin  (2.4GHz)

ELRS SuperP RX FCC915_RC1.bin（915MHz）

ELRS SuperP RX EU868_RC1.bin  (868MHz)

Update instruction：

1. Add the default IIC function, connect the barometer.

2. 13CH 14CH is migrated to 11CH 12CH by default.