well after promising myself i'd live with the rSAP as is and the crappy SatNav which is waaay out of date i've bit the bullet and headed like a Bull at a gate and gone/going Android the Columbus would probably need Software & maps, a replacement BT module so £120 or so maybe plus the hassle IF it went wrong - most likely with my track record   well it snowballed slightly, £350 for the HU, £50 for the DAB, £10 for a OEM USB cable - currently car only had aux although the socke