The launch of Android 5.1 was met with software updates for various Nexus 6 variants. The handset on T-Mobile, Sprint, and Verizon networks are all roaming the country with the latest version of Android. The Nexus 6 for AT&T, however, was left without the update until now.
Various owners of the device operating on AT&T’s network are reporting that the carrier is pushing the Android 5.1 software update to their handsets.
While forcing an update has been questioned for years, there does seem to be a workaround to get the update as quickly as possible. Performing a factory reset seems to cause the software update to appear during the setup process.