Can't be done ... the FCC boost comes through Drone-Hacks.com & is only possible on drones (on the right fw version) with DJI Occusync not like the
MA1 which uses Enhanced WiFi.
The fake GPS position trick is still available to get from CE to ordinary FCC though ... but you might need to use the Litchi app in order to get up the dialog message to switch country, this as the GO4 app rarely shows that dialog anymore. Once the switch is done you can continue to fly with GO4 of course.