A great advantage of Nexus devices is that it gets the latest and greatest operating system release first. Google publishes factory images for Nexus devices soon after the new version of Android OS is released. However, factory images will wipe all data you have on the device as well as require unlocked bootloader for flashing; else, you have to wait for the OTA update, which usually distribute several weeks after the factory images were released.

Now that became an old story. Google starts releasing OTA (over the air) image files alongside full factory images. OTA images will not wipe your data and does not require unlocked bootloader for flashing. It means, you can flash latest Android version soon after the release of the new version without wiping your personal data and unlocking the bootloader.



Note that the OTA images are not incremental update; they are full firmware which you can sideload on your device via ADB (Android Debug Bridge) command. You do not need to unlock your bootloader, and your data should remain intact. However, Google recommend you to backup any important data you have on your device.

To download the OTA images, you can always go to the Google Developers page [HERE] and download it for your device. Before downloading, you should agree with Google’s Terms & Conditions.

OTA images for the latest builds (Android 6.0.1) are currently available for the Google Pixel C, Nexus 6P, Nexus 5X, Nexus 5, Nexus 6, Nexus 7 (2013), Nexus 9, and Nexus Player. (source)

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Kannan is a computer and Android enthusiast, a blogger by passion and a tech freak. His always ready-to-help attitude, knowledge and hard work is what drives him.