I use my Moto X 2nd gen with my company network, and have been informed that my device will no longer be allowed to access their network since it is not running version 5.1.1. I checked, and indeed I’m at 5.1, so was wondering if possible to upgrade to 5.1.1 so that I can continue to use my phone at work with wifi connection.
The last update available was Moto X (2nd Gen.) SMR Update (Android 5.1). There is nothing available that is more up to date.
The update that @cbwahlstrom mentioned above is a Security update and is the last update for the Moto X (2nd Gen). The 5.1 OS was specially modified to allow Republic hybrid system.