Starting with the easiest rather than most likely:
Do you have a pic of the UART connector where you swapped the TX and RX? The connectors have a different number of pins, so it’s possible to connect it shifted over by one pin even after you swap the TX/RX
After that, bit of background. The stormcore is designed by the same primary engineer as the Foxbox Unity, and has a lot of similarities even though it’s a significantly upgraded next generation. I’m trying to dig up the useful threads on VX2s and unities, it’s a common issue getting them set up.
I did get mine running properly on a unity but struggling to remember what fixed it. I think it was a combination of
- Not having other UART devices, plugged in including the unity’s BT module
- Toggling/finding which one worked between FSESC and FOCBOX in the VX2
- Swearing
Actually I’m fairly sure it was this, the UART thing only caused problems with telemetry not with basic functioning: