I recently had a software upgrade and have noticed a problem with the radio function

Whilst I am able to scan the stations on the Auto store screen I cannot scan the stations on the memorised screen. I therfore cannot update the frequencys of the stored chanels on the memorised chanel screen. I'am doing anything wrong or do I have a problem.

Does anybody know if there is an updated manua as there seams to be many changes to th i drive software. Further more can this be found on the web in a pdf format etc