If you're a Nexus 4 owner, you may have noticed that the stock images Google usually provides for its consumers had mysteriously vanished from the Nexus images website. Well you're in luck as the images have miraculously resurfaced on Google's site.
Although we are uncertain why the image was pulled, we can tell you that nothing has changed as far as we can see. The MD5 hash is the same as before and it is for the most current flavor of Jelly Bean, Android 4.2.1 build JOP40D. Please note, however, that the binaries necessary to build AOSP for the Nexus 4 are still missing.
If you're one who tends to tinker with their devices and want piece of mind to restore your devices, make sure you get your hands on a stock image in case Google decides to pull another disappearing act.
Source: Google Nexus Factory Images