I guess that you have already installed android-tools (adb and fastboot). Running adb devices print info about your phone only in normal mode. But running fastboot devices print info about yout phone only in fastboot (aka droidboot) mode.in the links you have provided, you have put a shell script for rooting it in linux. But I have Ubuntu 14.04 LTS and fastboot never worked for me. I did install from apt-get and got udev rules from cyanogenmod forum. adb works fine for me but not fastboot. fastboot even does not list the device. what are you using? What extra config did you do for fastboot to work![]()
:crying:
If it doesn't work anyway, you could try udev rules from arch linux (I'm using it). This could be used in any linux distribution.