Does anyone know how to perform an iLINK or full system reset on the Z9? Since upgrading my Denon 3910 to multiregion, the Z9 has been unable to recognise the iLINK connection. I now get the error warning "iLINK info - Hop Over" which the manual attributes to more than 15 devices being connected. Well I only have the DVD player connected and even if I remove the iLINK cable, the Z9 still issues the error. The Z9 setup indicates that it can't register the device nor assign an input. Denon have confirmed the multregion software does work with Z9, so I'm thinking the amp has flagged the port as busy. The Z9 manual only lists a technique for resetting the video board - I've tried that, detaching from the mains for several hours, switching the iLINK ports and nothing does the job. Any ideas ?