No funcionando en automático lo he hecho manualmente siguiendo las instrucciones:
Manual Root Method:
4.4.2 method:
Download and extract the latest IOroot.zip
Enable USB Debugging. VZW users must also enable ethernet mode.
Open terminal/command prompt. windows/linux users: cd into /ioroot folder. mac users cd into /ioroot/mac
(windows users can hold shift key, right click in ioroot folder. Select "open command window" option.
1. adb devices
2. adb reboot recovery
(when booted in recovery, select: 'apply update from adb' with power button)
3. adb sideload kk_root.zip
reboot when zip finishes flashing. done.