This update only works on units B and C RNS 510. after updating the firmware i tried to update the maps, downloaded V12 maps at a size of ~4.If unit switches off, just switch on and it carries on. The Windows Update tool may be launched at any time by opening the Microsoft Internet Explorer web browser, and clicking on the 'Tools' menu, then selecting 'Windows Update'. Rns 510 map update time latest sd card it £208+ vat (ouch) the rns 510 also has internal memory and can be updated (both firmware and nav data) via cd.
