After buying V9 maps and their absolute refusal to load, I tried again with a disc I burnt and success is mine! I'm still on FW2760 and unless someone tells me different, my Rev A RNS 510 can't have it's Firmware upgraded any further? Can't say I see many changes to the mapping and I wonder if I'm actually seeing less road name information. Interested to hear comments. Thanks for your help. PR
successfully installed on RNS B unit with FW 3810, all POS and cameras work fine