I had already seen those links from the Clarion site, but as I mentioned I am unable to get to the 'Update" screen as the 'Update' button is greyed out.
I'm sure that if I can get to the Update screen (where red arrows might appear etc) then I can follow my nose to the solution.
The question is how to get to a point where I can get to the Update screen.
I am going to try and attach a photo of the screen, showing the greyed out button in question and the version numbers.
Thanks for replying!
I'm going to try downloading the files and placing them on a blank SD card. We'll see if that re-activates the 'Update button I guess. I will let you know!