Okay - thanks all.

If I do a factory reset, will I be able to install and continue to use iOS7 (or does the reset not affect the OS)?

Thanks

Neil

Main listening room - DSP5200SE
Satellite(!) listening room - DSP3200, AC200, 818v3, 500, 504, MC200, Humax Foxsat HDR (for recording radio), Slingbox Solo
Townshend Elite Rock Turntable, Nakamichi RX-202E Cassette (for old times' sake)