I signed up just to get help because I'm extremely frustrated.I have gotten the Kit Kat update for my t-mobile s4 and now I can't root my phone again. I have tried to root my phone using Chainfire Auto root md5 file (jfltetmo-sghm919.tar.md5) & Odin 3.09. I have follow the simple directions as I'm done several times before to flash the root files onto my phone then Odin tells me that it passed. but when i tested with root checker app, the app along with other apps that request superuser permissions, tells me that my device is not rooted. I have tried to root my phone several times using different computers and I have no clue why my phone will not root. in download mode my device states that the knox void has been tripped & the binary is custom. this leaves me scratching my head please help!