Took mine to a main dealer yesterday and they tell me ALL my software is up to date. Car is booked in November 22nd for investigations, will report back findings.
Botus - if your car is 2010 is it the facelift version with NTG3.5 COMAND?
Mine is booked in on Monday to " my " Mercedes specialist for him to look and that and a heater plug warning light. I'll keep you posted mate.I now share your pain.... today mine had gone to 21 March and will not change, you can set to whatever you like and it refuses to remember your choice
if you select tome zone UK it offers: do you want auto summer winter ? whichever you chose it ignores and keeps the summer time, so the analogue clock is now an hour out
changed FM stations, changed to DAB, tried the TV, tried the Nav, all working exactly as they should but the clock and date has gone mental and can't be fixed.... very annoying
everything in the manual points to time info coming from the sat nav..... and states if the time is wrong the sat nav time of arrival data and the traffic info won't work
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how are you running these diagnostics / tests have you got your own "star". not got mine back yet, looking for an air leak!!!