Huawei has started rolling out a new update to its Mate 9 smartphone. Arriving as build version MHA-AL00C00B153 and weighing in at 278MB, the update brings along the Android security fixes for December. Aside from the latest security patch, the update also includes several other changes, including 10x digital zoom option in the camera as well as some performance related improvements. As is usually the case with OTA roll outs, it may take some time for the update to hit your device.If you feel impatient, you can manually check by heading to your handset's Settings menu. Via
Source: http://www.gsmarena.com/december_security_update_hitting_huawei_mate_9-news-22331.php