NigelM
Recovering Member
I've only had my S for a few months so I'm unfamiliar with the update process. Why hasn't my S received 5.11? Can you request it?
5.11 was a service release with no new features. If you have no issues it's not worth updating - Along with many other folks I'm still happily on 5.9.
5.12 was to fix bugs on 5.11 but based on some accounts seems buggier than the earlier version.
As Jerry says above, best to wait till it gets pushed to you. You'll get an on-screen notification and just follow the instructions; btw the car needs to be left for a while during the actual install. Tip: install it at home in the evening when you're unlikely to need the car. It's highly improbable you'll have issues but that's just the safest way to avoid hassle.