Following the official announcement of an update to its mobile operating system with version Android 5.1 Lollipop, Google has released this update as a 'factory' image for some of its Nexus devices.
Currently, an update with the operating system Android 5.1 Lollipop is available for the following Nexus devices:
- Nexus 7 Wi-Fi tablet (nakasi)
- Nexus 10 tablet (mantaray)
- Nexus 5 GSM / LTE smartphone (hammerhead)