Google has officially released the Android 4.4.2 factory images for Nexus 5, Nexus 4, Nexus 7 (2012 and 2013), and Nexus 10. Every time a new Android version is released, Google is making the Nexus factory images available for download, also publishing the open source code in the AOSP repository.
The Android 4.4.2 update hit the first Nexus devices on Monday and now the Mountain View-based company is making Nexus 5, Nexus 4, Nexus 7, and Nexus 10 Android 4.4.2 factory images available for download, even though the OTA update didn’t hit all the devices. Using the Nexus 5, Nexus 4, Nexus 7, and Nexus 10 Android 4.4.2 factory images you will now be able to install the latest stock build on your handset.
Since the Android 4.4.2 OTA ZIP files are already available for download for all the supported Nexus devices, the Android 4.4.2 factory images will only come in handy to those who, for some reasons, managed to mess their smartphone/tablet up. Using the Nexus 4, 5, 7, or 10 factory images to update to Android 4.4.2 is more of a headache, because all the data on your device will be wiped in the process.
Since Google also posted the open source components of Android 4.4.2 in the AOSP repository, the developers, custom ROM makers, and enthusiasts will be able to use them for their projects.
If you want to manually install Android 4.4.2 on your device using the factory images you can download them from here, then use ‘adb sideload’ and ‘fastboot’ commands to complete the installation.