Need help on rooting and installing TWRP/CWM on my KNIGHT Elite

Hi everyone! I'm having trouble finding ways on rooting my Starmobile KNIGHT Elite. Tried framaroot, kingroot, and oneclickroot but failed. Below is the specification of the phone. Hope that helps. Thanks in advance!

CPU: 1.5ghz quad core + 1ghz quad core Qualcomm Snapdragon MSM8939
Ram: 2gb
Android version: 5.0.2

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