I bought an AT&T 32 GB Galaxy S4 (SGH-I337) yesterday and rooted it using the "MotoChopper" method . I then tried to find a custom recovery and didn't come up with any . This morning i got a pop saying i have an update from AT&T, I downloaded "RootKeep" click on save root then took the update. While the phone was rebooting i noticed it was saying "Custom recovery" with an Open Padlock. What does this mean ?. I know on other devices an open padlock means the Bootloader is unlocked .