The Fly-Gemini-V2 has been replaced by the Fly-Gemini-V3 https://github.com/Mellow-3D/Fly-Gemini-V3
RRF Information can be found here https://teamgloomy.github.io/fly_gemini_v2_general.html
Klipper information can be found here https://mellow.klipper.cn/#/board/fly_gemini_v2/ and here https://mellow-3d.github.io/fly-gemini_v2_general.html
For Klipper support please join this Discord Channel https://discord.gg/zAung88zbK
For RRF support please join this Discord Channel https://discord.gg/uS97Qs7