Confusing eh? I guess we just have to follow the advice of the brand we've got... which in Garmin's case is just that most devices won't have a problem. Yes, it's important to update, which I do, about once a month usually.
I do have a seriously ancient TomTom One from 2005 stuck in a cupboard somewhere, which I have no doubt won't work any more!
Yes they've known since 21st August 1999, when the first rollover was triggered... but this one will still happen because the system software allows for just 1024 weeks to be counted off. It won't cause any major dramas I doubt, other than for really old devices, because all they have to do is reset the programming with the right date and time for the beginning of the next 1024 weeks.
I know the news about this is more visible now but I remember reading about it a few months ago. I've just never been sure - still not really - if it will make any difference to update before 6th April or not. I have updated three months in a row since I read about the issue but there's no way to tell if that's fixed something that's not supposed to happen for another few weeks, if you see what I mean! I get the impression from reading about it that the 1024 week programming is also part of the satellites that GPS uses. Hmmm, I wonder if someone's going to fly up there with the fix on a memory stick
In order to be sure that my unit would continue to work OK after the week number rollover (when I will be in Europe), I submitted a support request, detailing my unit model and serial number. Garmin Europe responded with a link to their web page with generic information (as referenced above and from which I had quoted in my query) - not exactly helpful!
A telephone conversation with them has elicited the information that units affected by the week number rollover are the Dashcam 20 and Dashcam 30, so hopefully all navigation devices will be OK.
Fit an android unit and download Sygic offline maps then no issues at all Wonder how many fixed vehicle GPS systems will deal with it. My car one is Navteq/HERE system and apparently will have no effect.