SP flash tool especially designed to flash mobile phone comes with mediatek mobile processors and some time mobile company modified its setting to use it with their specific brand for ease of its users. Zopo mobile also modded this flash tool for z999_3x series so can easily flash with this tool.
Download SP Flash Tool for Zopo Mobile Z999_3X v5.1436
You can download it from below link and remember to like or rate this download.
Windows 7/XP/8 32bit/64Bit
Other useful links for zopo mobiles