To use RTH you ned to set your geolink return to home at function 4. i think that was at 65% switch.
When you connect your battery and receiver, let it get satelite signal for at least 20/30sec before you take off! This will be your rth gos point. You can activate and disable when ever you want! Remember to update and correctly setup your geolink in separate menu. Also altitude height at around 20m minimum
BUT!! There is a big but!
I dont believe spirit has done any changes yet to settings/sw..
Ryh is EXTREMELY violent!!
Depending on your cyclic/pitch settings it csn be really harsh to the heli at the time activated. Its instant and to be honest really half done. You risk a bladestrike or broken main gear..
You can see what i mean in my video. Happened 2 times to me that my main gear gets stripped
There is no smoothing /limit settings for rth.. only rescue.. not the same thing
https://youtu.be/YPp81ieFFcg