If you own a Moto X4 you should have received the over-the-air update notification for November 1 Android security update. New software update for the Moto X4 brings along Camera and Stability improvements. The Update weighs in at around 126MB.
Motorola’s instructions explain that for a successful installation, the battery in your phone should be at least 50% charged and your device should be connected to a Wi-Fi network or LTE.
If you haven't got the notification of this new software update yet, Just go to Settings - About Phone - Software updates, and It will automatically start downloading the latest update. The update will take around 10-15 minutes to get Installed on your device.
About Moto X4:
The Motorola Moto X4 has a 5.2-inch full HD display, powered by the Qualcomm Snapdragon 630 processor, with 4GB of RAM, 32/64GB of storage and a 3000mAh battery inside powering the device. It does also have dual 12+8 megapixel cameras on the back of the device, and it is made of glass with Corning Gorilla Glass 3 protection.