OK thanks for the help with recovery, I have managed to do that. However, I updated using: updatev1.7-cm-7.0.0-RC2-GT540-MUR4IK-signed . The update seemed to go well, but now when I switch on my phone, I get to a Cyanogen mod7 icon with an arrow going round in a circle. But that is as far as it goes. I cannnot get the phone to go any further. Any suggestions anyone? As I am nervous that I may have bricked my phone. Many thanks for any help.