spektrum dxs

For the FT mighty mini arrow that I was building, I needed elevon mixing. The manual for the DXS says that if your model pid is starting with SHTK then you have to update. Mine starts with SHTA. Does it also need to be updated, because when I perform the trim positioning when powering on the dxs...

I am looking for the most cost efficient way to connect a spektrum dxs with the flight simulator. What items would i need to connect the dxs to the sim?