So after a few weeks of me not using the navigation on my clarion nx501 I decided to update the maps as the road I drove down wasn't on the map, s:scared: :scared: s:scared: as with these lovely clarions the maps are on a SD card. So took to the laptop asked me to update some software so I did . Then I put the sd card back in the unit and now the navigation is greyed out on the unit s:shock: :shock: s:shock: has anyone got a clarion with the files on a sd they are kind enough to share to see if my sd is corrupt?