You'll need to be on stock (unrooted) LJC to do the update.
Also... for now if you want to re-root:
1) Install custom recovery of your choice
2) Flash the following .ZIP:
...and you'll be all set.
I'm hoping to see a full TAR available soon where we can make proper one clicks.
|| Google+/Hangouts (Non-Moderator issues only please)
Useful Links: Forum Moderator List
|| Forum Rules
Please click on the "Donate to Me" on the left to donate to my Extra Life 2014 campaign.
All proceeds go to the Lurie Children's Hospital in downtown Chicago.
Please continue to thank and support those who bring these great things to our devices!
(That includes RTs, RCs, RDs/SRDs, FMs/SFMs and the people who maintain the site.)