Better: Mt6577 Android Scatter Emmc.txt

partition_index: SYS14 partition_name: ANDROID file_name: system.img is_download: true type: NORMAL_ROM linear_start_addr: 0x1908000 physical_start_addr: 0x1908000 partition_size: 0x22600000 region: EMMC_USER storage: HW_STORAGE_EMMC boundary_check: true is_reserved: false operation_type: BINARY reserve: 0x00

: It allows the SP Flash Tool to restore a non-functional (bricked) phone by rewriting the stock firmware.

Master and Extended Boot Records that define the partition table.

partition_index: SYS13 partition_name: EXPDB file_name: NONE is_download: false type: NORMAL_ROM linear_start_addr: 0x1868000 physical_start_addr: 0x1868000 partition_size: 0xA0000 region: EMMC_USER storage: HW_STORAGE_EMMC boundary_check: true is_reserved: false operation_type: BINARY reserve: 0x00 MT6577 Android scatter emmc.txt

| Field | eMMC version | NAND version | |-------|--------------|--------------| | Addressing | Linear hex offsets (byte-accurate) | Page/block based | | partition_index | Usually omitted | Present | | linear_start_addr | Explicit start block | Not used | | physical_start_addr | Same as linear for eMMC | NAND chip layout |

use a scatter file from a different phone model, even if it has the same MT6577 chipset. Different models have different partition tables and memory sizes; using the wrong file can cause a "partition overlap," which often results in an unrecoverable soft-brick (a device that won't boot at all).

: The label for the data block (e.g., PRELOADER , MBR , EBR1 , UBOOT , RECOVERY ). Different models have different partition tables and memory

: This specific file is only for the MT6577 , a dual-core Cortex-A9 chip popular in budget smartphones from 2012–2013 (e.g., older Micromax, Lenovo, and Alcatel models). Using a scatter file from a different chipset (like MT6589) will likely result in a "PMT changed" error or a hard brick.

: Using a scatter file from a different device model—even if both use the MT6577 chip—can hard brick your device due to differences in partition sizes and memory mapping.

: It acts as a blueprint, specifying the starting addresses and partition sizes for every block on the flash memory. Using a scatter file from a different chipset

Using this file is a core step in restoring a "bricked" device or upgrading its operating system. Android Scatter File Structure Overview | PDF - Scribd

Addresses shown are relative; real offsets vary by OEM.

The Ultimate Guide to MT6577 Android Scatter EMMC.txt: Flashing, Repair, and Firmware Recovery

→ immediate dead boot (no charging animation). → Fix : Flash full firmware with preloader from same exact model.