Google servers are about to get hit in a very bad way. That’s because Android 4.4 KitKat is finally available for all recent Nexus devices, including the 2012 ASUS Nexus 7 (both WiFi and 3G versions), the 2013 Nexus 7 (both WiFi and LTE versions), the Samsung Nexus 10, and the LG Nexus 4.
Factory images are available on Google’s developer site, and OTA updates have also reportedly started rolling out (although it might take a while before it reaches your device, since Google is in love with staggered roll outs). As of publication, the OTA update hasn’t shown up on either of the Nexus 4 phones in my household, or either of the Nexus 7 tablets currently under my control. However, I may go ahead and just download the factory images and update everything myself.
The process of restoring a factory image is fairly straightforward. You have to have some familiarity with fastboot and ADB, and your phone has to be unlocked. Once you download the image, just make sure your phone is connected to your computer, unpack the image, and run the ./flash-all.sh script. Then just sit back.
Update: It also looks like the Nexus 10 factory image has been pulled, and I’m not sure why. Hopefully Google fixes whatever the issue is, and gets it back up quickly.