goophone i7 plus HELP!

[Elder55]

hello! Im new at the forum
I need help...help me help others!!!

I got my goophone i7 plus today, I like to upload stock and custom roms of my phones (like goophone i5 and i6s)

the model is MGA92ZP/A android 5.1 mtk6580 quad core, 512 ram

Whats the problem?
the problem is, I already have pda net drivers, mtkdroid tools, flash tool, vRoot
and everything doesnt detect the phone as debbug device, the pc detects it as usb storage and internet sharing but not adb/debbug to make a rom backup!!

I tried everything and it just doesnt work. help! some people need this rom on internet! also i had two cases at forums of bricked goophone i7 waiting for a stock rom donator!
I think this phone is too new and different cause my pc detects as debbug and mtk droid tools other mtk phones but not this one at all...