Ford Focus: Ford Focus CMAX 1.6 Ghia Clock change (again!)

Although this has been posted before, all the answers were unsatisfactory.
There are no instructions relevant to the Ghia 6000 CD in the owner's
manual, and although I have tried various combinations, I am still unable
to adjust the clock on this.
It has been an hour slow since BST began!
Help!!!!!!

TheSurgeon wrote: 
Mine has been "upgraded" so I now do not have the option to change.
However, The RDS ON/OFF is just after the 12/24 hour setting; if you can
set the clock manually then it's not on RDS.
The display shows 'RDS OFF', if you then use an arrow button instead of
the 'menu' button, the display should change to 'RDS ON'

If that does not work and you want to set it manually, take it into a
Ford garage, either as part of the service, or when you are free and ask
them you are having trouble with the clock not telling the time properly
and they will update the clock firmware. This will result in a Manual
only option:
Press Menu about 5 times and the option to set the clock appears.

--
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Thanks