Backup on nexus 7 without root?

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http://forum.xda-developers.com – So I flash new ROMs on my phone constantly and I would never be able to bear being such a flash whore without titanium backup. I'd like to root my nexus but I keep reading it deletes everything and as dumb as it seems, I want to keep my Garfield data! I've read about nandroid backup but it does the same image right? Is there a way to backup just apps+data like titanium backup without rooting it first? Or using a backup app without needing root access? Sent from my One X using xda app-developers app (HowTos)