Game killer - Root privilege is needed solution / SuperSu update fail fix !!!

Hey people I realy hope this video will help you ! If not you are welcome to leave your coments and I will see if I can help you !\r
Just One More time want you remind...\r
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1.Check do you have your device rooted and rooted correctly is there SuperSu or SuperUser on your home screen !\r
2.Download root checker and see what it says !\r
3.Open your SuperSu or SuperUser and check have GameKiller accsess granted ! \r
4.And last - Hold down OFF + volume down buttons to open bootloader then navigate with volume buttons and select with on/off button - in bootloader menu select fastboot then reboot and wait until your device reboot after that try to open your SuperSu to check is it working properly !