Hey, I am trying to unroot back to the stock AT&T ICS Firmware, I tried using the CM10 JB Mod and there are a lot of issues I am running into and just wanna go back to having a functioning camera, illuminated buttons, and LTE 
How would I go about doing that? Sorry for being such a noob at this but I need help in doing this please!!

How would I go about doing that? Sorry for being such a noob at this but I need help in doing this please!!