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Root [AT&T] need help with my S3

lichborn

Newbie
I was trying to unlock it so i downgraded with M-Odin to 4.1.1.
It boots just fine but i have null imei and no service signal. I have tried reupping to 4.4.2 but that just got me the same results only i couldnt get wifi because of no sim inserted message. redowned to 4.1.1. Please help me fix my phone. Also i have no sound whatsoever and when i use mx player the audio track isnt selected and wont select. i can click on it but it wont select.
Here are some screenshots from "About Device"
Screenshot_2015-03-31-19-25-02.png
Screenshot_2015-03-31-19-25-12.png
Screenshot_2015-03-31-19-25-17.png
 
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