The MediaTek MT6577 chipset, introduced in 2012, powered a massive wave of dual-core budget smartphones. If you are still maintaining, restoring, or developing custom ROMs for legacy MT6577 devices, you have likely encountered different formats of scatter files. Specifically, using an emmc.txt based scatter format offers significant advantages over older MTD/NAND formats when flashing firmware via SP Flash Tool. What is an MT6577 Scatter File?
If you need help resolving a specific error or structural issue, please share the your tool is throwing, the brand/model of your device, or whether your goal is a full unbrick or a storage resize .
: This is the standard method for older chips like the MT6577. Connect your device via USB with USB Debugging MTK Droid Tools Blocks Map Create Scatter File file (usually named MT6577_Android_scatter_emmc.txt Manual Editing (Advanced) : If you need to manually fix a file, you can open it in to verify the linear_start_addr partition_size values against your device's actual blocks. WWR MTK Tool : If the phone is bricked or MTK Droid Tools fails, the WWR MTK Tool mt6577 android scatter emmctxt better
: The /data partition that holds all your installed apps and settings.
: Modern versions of SP Flash Tool require these specific .txt maps to communicate correctly with the eMMC controller. The "Deep Story" of MT6577 Development The MediaTek MT6577 chipset, introduced in 2012, powered
partition_index: SYS2 partition_name: EBR1 file_name: EBR1 is_download: true type: NORMAL_ROM linear_start_addr: 0xC0000 physical_start_addr: 0xC0000 partition_size: 0x80000 region: EMMC_USER
The EMMC.txt method accurately defines the separate boot blocks ( ROM_BOOT1 and ROM_BOOT2 ) where the preloader resides. This prevents accidental overwriting of the critical phone bootloader. What is an MT6577 Scatter File
: Click the Download button. Turn off your MT6577 device entirely, pull out the battery if removable, and connect it via USB while holding the Volume Down or Volume Up button to force handshake detection. Summary Table: NAND vs. eMMC Scatter Files Characteristic NAND Configuration File Optimized eMMC Configuration File ( emmctxt ) Storage Parameter HW_STORAGE_NAND HW_STORAGE_EMMC Addressing Method Page blocks/Bad Block Tables (BMT) Linear Logical Block Addressing (LBA) Critical Files Requires sequential raw ECC binaries
Common labels include PRELOADER , BOOTIMG , RECOVERY , and ANDROID (the main system partition).
The file itself was just a simple text document, but it contained the "soul" of the hardware's memory layout: Layout Setting Partitions : Defined by linear_start_addr physical_start_addr
The MediaTek MT6577 was a popular dual-core Cortex-A9 SoC used in many budget and mid-range Android devices around 2012–2014. Unlike older NAND-based storage, many MT6577 devices shipped with (embedded MultiMediaCard) storage. Flashing or backing up firmware on these devices requires a correctly formatted scatter file (usually MT6577_Android_scatter_emmc.txt ), which describes the partition layout on the eMMC chip.