In the context of the MT6577 chipset, using the correct scatter file is not just "better"—it is for a successful flash: NAND vs. eMMC
A scatter file means:
Newer versions of SP Flash Tool (v5.x) look for this flag. A better scatter file explicitly defines: memory_device: 1 (for eMMC) or memory_device: 2 (for NAND). If you use an old NAND scatter file on an eMMC board, you will hard-brick the device. mt6577 android scatter emmctxt better