Exact same thing happened to me after buying a used rev2-16. Osc calibration got stuck on voice 2, osc 7. I left it for over 30 mins, came back to the same state, so I powered it off for 10 sec, powered on, lowered MW to 0, reset globals, power cycled again, then ran osc and filter cal without a hitch.
Possible cause? I suspect not having MW at lowest point may have been the cause - the wheel cal page comes befor osc/vcf and ends with MW at top setting, so if you’re calibrating both be sure to lower mod wheel to bottom before calibrating osc/vcf!
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