Citroen

I have been trying to update the clock and date on my citroen, but cant seem to change it! it keeps blinking and ive tried pushing ething....i know its the most simplest thing, but havent been able to do it! help!!

Ignition on, radio off.button to left of display, push it and *hold it in*.after 3 or 4 seconds, you will get "language: english".keep pusing the left button to scroll through the menus until you get to the time and date. push the button on the right to change any value that is flashing, then button on the left to change to next value. when all the values have stopped flashing, it is set!hope that helps.