First off, can you confirm which firmware version you have on the car, the full version number?
Reason I ask is that if you were updating maps there is an earlier version of the firmware that would not accept an update.
If radio is working, try rebooting R-Link, Normally, when the Rlink is on, you press and hold the on/off button of Rlink until screen goes blank and then release. As you can't see the screen, with radio on press and hold on/off button for say 30seconds then release. Usually the reboot process takes a few minutes.