4.1.2, rooted and need to swap my device under warranty. How to unroot?

[Dreamliner330]

I'm on 4.1.2 and rooted. How do I unroot to send my device back to Verizon for a warranty replacement?

(The HD Utility 1.10 4.04 restore does not work from 4.1.2)

 

[sacerdos]

If you are using supersu, there is an option for unroot in the settings.

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