Nissan Connect DEAD... BUT still can get Station Updates?

[gmcjetpilot]

What is an open system OVMS?
How does it work; cost, install?
What do SIM cards have to do with TCU?

Edit; I looked up OVMS. How would that replace the utility of the Nissan Connect TCU.

 

[cwerdna]

I found https://mynissanleaf.com/viewtopic.php?f=31&t=32715&hilit=ovms on it. I'd heard of OVMS well before mentions of it there (e.g. Google for site:teslamotorsclub.com ovms) but never cared.