You can't flash an OTA with a custom recovery, it can only be installed using the stock recovery. Also, what OS is currently installed on your device? Unless you have the correct preceding OS for the OTA to build onto it won't work, or it'll damage your phone. Another thing to consider is the fact that if you've unlocked your bootloader at some point you'll have SuperCID, another thing that won't allow an OTA to install.
If you desperately want to run the at&t stock 4.1 ROM you will need to get s-off on your device and run the 3.18 RUU. If you attempt to run the 3.18 RUU while s-on you will brick your phone, please be aware of that. I'm not sure why you'd want to run the at&t stock ROM though, there are features deliberately broken/missing on at&t ROMs, plus 4.1 is getting old now. Why don't you flash a custom ROM? That way you can have all features working, Sense 5, and the 4.2.2 Android version.
Either way you're gonna need s-off before doing anything.
Sent from my Evita