TIM am/pm setting

Hi

I have had my FL VRS for a couple of weeks now, but I have a little problem...

I have set the TIM times for the RDS recordings when I first got the car, but being as bit thick, I accidently put both times as am, when I ment one for the morning (7am) and the other as 3pm - but for the life of me I cant figure out how to change the 3am to 3pm - if I go into settings for the Boleno, I can change the 3am time to 3pm, but if I press the back button then it doesnt save it - if I turn off the stereo having made the change, when I next turn it on, its back to 3am - if I take the ignition key out having made the changes, it goes back to 3am

Any ideas or suggestions?

I guess I could try reading the manual again (but that's boring)

Ta

Jim