firstSetupDefaultFor
fun LoRaRegionPresetMap?.firstSetupDefaultFor(region: Config.LoRaConfig.RegionCode): Config.LoRaConfig.ModemPreset?(source)
The preset a first-ever setup in region should install, or null to leave the choice alone.
Gated on the firmware map: an unconstrained node is running firmware whose own region chooser installs the region-table default, and overriding it there would make the same node set up from the phone and from its screen disagree. Only a preset the map lists as legal is adopted.