please help me root and change the imei of Itel it1402

please I'm using itel it1402. I realized that it is very difficult to root. I've tried Framaroot, King root, root genius and iroot, but these apps can't root itel it1402. Any ideas on how to root this phone?
I also wanted to change the IMEI of the phone using mobile uncle tools but it doesn't work. I have also tried engineering mode but the phone is not MTK based, so it doesn't work. Any ideas on how to go about this? thank you

Use kingo app on pc. It should help you fix the rooting problem.KINGO ROOTING APP. For the change of imei check this link in the forum how to change imei.
I hope it helps.