Nexus Root Toolkit

This program will automatically bring together all the files you need to unlock and root your device in a few clicks, or flash it back to stock and relock it.

You can also use this program to back up/restore all your important data, flash .zips, set file permissions, push and pull files, install apps, generate logcats/bugreports, and much more. With the included file association options, you can perform tasks like flashing .zips, installing apps, restoring Android backup files, and flashing/booting .img files with just a double click.