There are sites that have a doctored version of Navcore 9.2 that will run on the rider1 & 2 quite well  Unfortunatly TomTom dont see fit to provide an official update since 7.9   I have seen on verious forums that 9.4 has been released for the rider in the USA and Canada but this certainly is not officially available in the EU.

I have sent a question to TomTom but all they did was say 9.4 was a release for traffic enable units ask for my system data.