Here you can download drivers pack for Doogee X6 which comes with mt6580 cpu from mediatek. If you want to connect Doogee X6 phone with pc then you need its usb driver. THis drivers pack also contains adb mtp vcom and preloaders drivers.
Download Doogee X6 USB ADB Vcom Preloader Mtp drivers
Supported with : Windows xp , windows 7 , windows 8 and windows 10 both 32bit and 64bits.