I have a 9200 set to come on at 7.00 am. Since the latest upgrade it has taken to freezing at 6.59 am during the switch on process. It does not happen every morning and there is nothing recording at the time.

I am on the Sutton Coldfield transmitter.

Any ideas please?

Try changing the switch on time. This may re-initialise something which became corrupted by the firmware upgrade (this is a general principle, not something that is specifically known to be a problem in this case).

Thank you I will try that.