Originally Posted by dimakiller3
basically i installed a new custom rom ARHD and my wifi doesnt work there. After searching on the web apparently it's a firmware problem. I was told that if i install a stock rom and update the firmware there and reinstall the ARHD again my wifi will work.
No, for the AT&T version that actually will not
work. OTA will only update you to 4.4.4, and current ARHD is 5.0 (assume current Lollipop based ARHD is what you want).
Further, if you update to 4.4.4 OTA, this will break sunshine, and you won't be able to get s-off. So you will be essentially stuck on 4.4.4 firmware until AT&T releases Lollipop.
If you want to run Lollipop now (and any current ROM based on it, like ARHD) my advice is to s-off now. Then update to LP firmware manually.