I have recently purchased.TomTom start 25 uk roi 5inch screen.On checking the map version on the device it stated 8.65,i have since downloaded the the free updated version it now shows 8.90 on the device.Am i right to assume that i have the latest map version now on my satnav.The reason i ask is because the download only took a short period of time and the Webpage maps uptodate.Also what exactly does (camera alerts no subscription required) in the product info mean.What free service does this provide.Thank you .