How to unroot a droid charge from superuser

[eumora]

Please Help, I know nothing about rooting, I just purchased a phone off of ebay that was rooted, I don't have hardly any factory installed apps (i.e. navigation, backup assistant, or any of the described apps in the reviews) I am a rookie to these things.

Please help. How can I unroot this phone?

 

[ellisz]

Odin the stock EE4 image. Will be back to stock. Read up on Odin first.