**WARNING** if you on 4.4.4 here is how to downgrade easily. http://goo.gl/6WR2s4
Pre-Requisites
You must be on 4.4.2 (NC2), install https://towelroot.com/ then install BusyBoxFree from Google Play Store, Then install SafeStrap 3.75 https://www.androidfilehost.com/?fid=95832962473398959 then save the NL1 to your MicroSD card. This process will not affect Knox Warranty Flag. 0x0
Download Files:
NL1 (Rooted-Stock-Rom)
http://goo.gl/AjPbFR
http://goo.gl/AjPbFR
NL1 Stock Kernal
NL1 AT&T Change Log
http://www.att.com/esupport/softwareUpdateArticle.jsp?sid=KB423151&partner=LinkShare&siteId=je6NUbpObpQ-3sMWA4MULNqu7rOePN0NXw#fbid=2oEtZq05ft1
http://www.att.com/esupport/softwareUpdateArticle.jsp?sid=KB423151&partner=LinkShare&siteId=je6NUbpObpQ-3sMWA4MULNqu7rOePN0NXw#fbid=2oEtZq05ft1
Source: XDA