Hello, from looking at the NAV screen in the X, it seems I have 4-1/30. Is this the latest? How do I know if it is MKIII or MKIV? How much does the disk cost if it needs to be updated? Thanks for your help.
*Nevermind, I found the answer. I was able to update my firmware, now to buy some updated maps. There's no telling how old that disk is, it's probably the original from 04.