A couple of days ago, Android 4.2.1 was made available as part of the Android Open Source Project and Android codemaster Jean-Baptiste Queru has promised to bring the factory images and binaries for the multiple Nexus devices. Just as promised earlier, Google has posted the full flashable images of the newly baked Android 4.2.1 JOP40D for the Nexus family of devices, including Nexus 4, Nexus 7 (Wi-Fi and HSPA+ variants) and Galaxy Nexus (takju and yakju variants) only.
Here is the list of the Nexus devices with 4.2.1 factory images, as well as the code number and build number for each:
Nexus 4 (occam): Android 4.2.1 (JPO40D)
Nexus 7 Wi-Fi (nakasi): Android 4.2.1 (JPO40D)
Nexus 7 HSPA+ (nakasig): Android 4.2.1 (JPO40D)
Galaxy Nexus (takju): Android 4.2.1 (JPO40D)
Galaxy Nexus (yakju): Android 4.2.1 (JPO40D)
The 4.2.1 factory image for the Google Nexus 10 hasn’t been includes, as the Android 4.2 JOP40C build isn’t not being flashable over older builds. Factory images will help you to restore your device to 100% stock after tinkering and if you want to return to factory state after flashing some custom AOSP builds on your device, these images will allow you to lock everything back up, including that bootloader and t will make restoring your device to make it look like you just pulled it out of the box. So, download these files and store in a safe place.
Google has also provided the Android 4.2.1 driver binaries for are also now available for a host of devices, including the Nexus 10, Nexus 7 (Wi-Fi), Galaxy Nexus (maguro), and the Verizon Galaxy Nexus has also been included in the list.
Hit the appropriate links below to snag the Android 4.2.1 factory images and driver binaries.
Android 4.2.1 Factory Images | Binaries
How to flash Android 4.2.1 factory image:
Fro flashing instructions of the factory images, head over to JBQ post here.
Source: Google