steps
what you'll need: USB-C thumb drive (FAT32), same process as all RR/R2 fixtures
1See Double Rainbow how_to_steps, identical process for all RR lengths
Gotcha2ft (RR50) and 4ft (RR100) share the same firmware image GotchaBoot Loader v1.0 required before installing 0.9b if coming from 0.8b or earlier