Look for a zip archive named like sunxi-tools-windows-portable.zip . Inside, you should find:
Revive "bricked" devices by loading a new bootloader. sunxitools windows portable
Sunxitools is an open-source collection of command-line utilities developed by the linux-sunxi community. It targets Allwinner SoC (System on Chip) devices. The toolset communicates directly with the bootloader and the low-level hardware components of the chip. sunxitools windows portable
sunxi-nand-part /dev/mtd0
For NAND-based devices:
This process produces executables that can be used directly or packaged for distribution. sunxitools windows portable