and the RR and RP both stock 1 software compatible(Hybrid Boost) confusing thing is that theres 3 different PDF files? PDF, PDF V19 4.5r, and PDF V19 13.5R. http://www.speedpassion.net/reventon/home.asp Firmware Support list & Setup Sheets tab. but if you go to this link theres another V19 download http://www.speedpassion.net/us/download.asp?page=1

which one do u download? sorry for firing off so many damn questions