I have a Leaf N-Connecta 2020. with software version 283C30861E, map 17445_0_2 and nav18.06.06.
In theory the car should be able to do automatic map updates (for 2-3 years at least) via Wifi, or alternatively manually via USB.
The maps in my car are quite outdated now (at least by 1 year, apparently I have maps version 2020.something) because we have a new highway around here, with several changes also in surrounding roads...so most itineraries suggested by the navi are completely wrong.
Up to some months ago, whenever I tried a wifi map ugprade the car just replied that I already had the most recent maps.
Now it is a few days that when I try a WiFi upgrade the car shows a screen saysing "starting map update, please wait" (I'm traslating from italian, so the exact wording in English can be different).
Problem is, it stays stuck there for hours with no progress. I.e it doesn't work at all....as if the map update server is dead/offline.
So I tried the USB way.
Apparently you should be able to do map updates via USB for 2-3 years, using web site https://apps.nissan.navshop.com
: this site has instructions and the software to do it.
But this one doesn't work either for me! When I prepare the USB stick on my car, the car creates and saves a folder named "AllianceNDSMapConfig" on the USB stick.
Then you download the "Map Update Tool" from that site (I got version Versione 188.8.131.527 for Windows), run it and it should recognize the USB stick and save updates maps on the stick.
Problem is the tool says the stick is invalid. So I checked what the software actually does and it indeed checks the content of the stick, but instead of looking for a folder named "AllianceNDSMapConfig", it searches for a folder named "TomTomNDSUpdate" and, if it cannot find that folder, it just gives up. So there is no way that that tool works with my Leaf with its current firmware. EIther one is probably outdated.
Does map update actually work for you? Do you know where to find a "Map Update Tool" that accepts the AllianceNDSMapConfig folder created by Leafs with current firmware?
Searching with Google I found that some Renaults have a map update tool that indeed uses name "AllianceNDSMapConfig" (probably Alliance is the Nissan-Renault alliance) but I couldn't find a working Renault software either....
The file saved on the USB stick by the car also has some useful info, for example it seems to report that I should have free map updates until April 2022.