Google has just released another update with Android 4.4.4 KTU84P Stock Firmware for the Nexus 5 Android smartphone. The update isn’t huge as Android 4.4.3 was just released couple weeks back but it seems like a minor security update. I should be posting a rooted version of this that you can install using CWM/TWRP recovery but in the meanwhile, you can grab the latest Android 4.4.4 stock firmware here.
If you ever need to unbrick your Nexus 5 or return your phone for warranty purposes, you can unroot your Nexus 5 completely back to stock with stock firmware. Now, if you did make a backup ROM of your stock ROM, you don’t have to do this, you can simply restore your stock ROM then lock the bootloader. But in case you did not make a backup of your stock ROM, here’s how to unroot your Nexus 5 with stock firmware. You can use Windows, Mac, or Linux to do this. *WARNING – This unroot method delete EVERYTHING on your Nexus 5, please MAKE A BACKUP of EVERYTHING