Originally Posted by CYNICALifornia
Under the device selection choose the last option, Android *.*.* Any Build.
Root it with the custom recovery box checked
Now, if you want to return to 4.1.2 stock without root click the appropriate button on the root toolkit. Don't forget to relock, if it bothers you.
Thank you sooo much
. Worked perfectly. Downgraded mine then my partners
. Ironically I then had to return mine to the store as I found a fault with the screen and my new one had 4.1.1 on it lol. My partner is very happy and loving her Nexus again. Her most used app just wouldn't work on 4.2.