Just updated my RNS to 4120.
I now have access to the secret menu and Radio text such as Artist etc.
Pretty chuffed, only problem my dual layer disc didn't work as I planned to install v10 maps but hey oh can't have it all.
I've just ordered v10 on the internet for £20 which takes away the hassle of burning etc as I only have a Mac and I spent 4 hours today at a mates using his Windooze PC installing Nero etc so I could burn the v10.
I have a C unit so I assume 4120 is the best firmware for my unit ?
Just need to get POI's and Cameras, the search continues