Unroot S7 Edge Sprint

Bought a sprint s7 edge off of a person online. Met up with them and checked to make sure phone works. After getting home I decided to do a factory reset from the phone settings. Now phone restarts after abou 1.5mins. I cant get past the WELCOME SETTING DEVICE UP FOR FIRST TIME USE beforee phone shuts down and repeats the process all over again. I tried using odian and flashing my exact build but it keeps failing! Someone please help

from Android Forums at AndroidCentral.com - Ask a Question //forums.androidcentral.com/ask-question/758420-unroot-s7-edge-sprint-new-post.html
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