: If you use a NAND scatter file on an eMMC device, the SP Flash Tool will return an error because the memory addresses won't line up. Always ensure your file is named MT6577_Android_scatter_emmc.txt . How to Use the MT6577 Scatter File To flash or unbrick your device, follow these steps:
[Revised] How to use SP Flash tool to flash Mediatek firmware mt6577 android scatter emmctxt link
While many download links for this legacy hardware have gone offline, you can still find verified versions on community repositories: : If you use a NAND scatter file