Scatter File New - Mt6761

Technical Write-Up: Generating a New Scatter File for MediaTek MT6761 (Helio A22)

5.2 Verify with SP Flash Tool

• Load the new scatter file in SP Flash Tool (v5.20+).
• Click “Scatter‑loading” → If no error, the format is correct.
• Perform a “Readback” of a known partition (e.g., boot) and compare MD5 with original.

4.2 Extract Start Address & Size

Use fdisk or sysfs to get exact addresses:

cat /sys/block/mmcblk0/mmcblk0p22/start   # start sector (relative)
cat /sys/block/mmcblk0/mmcblk0p22/size    # size in sectors (512 bytes each)

Calculate:

• linear_start_addr = start × 512
• partition_size = size × 512

What is MT6761?

MT6761 (MediaTek Helio A22) is an entry-level quad-core SoC used in many budget Android phones. A scatter file is a plain-text layout manifest used by SP Flash Tool (and similar tools) to map firmware images (bootloader, recovery, system, userdata, etc.) to physical partitions on the device’s eMMC/UFS storage. Creating an accurate scatter file is essential for flashing, backup, or partition-level modification. mt6761 scatter file new

3.3 System & User Data Group

• Partition: boot
  • File: boot.img (Contains the Kernel and Ramdisk).
• Partition: dtbo
  • File: dtbo.img (Device Tree Overlay, crucial for display touch initialization).
• Partition: logo
  • File: logo.bin (Initial power-on animation).
• Partition: super (or system / vendor)
  • Note: On Android 10+ MT6761 devices, the system and vendor partitions are often merged into a super partition using Dynamic Partitioning. Older layouts (Android 9) will have separate system.img, vendor.img, and odm.img.

Section 7: Frequently Asked Questions

2. File Format and Syntax

The MT6761 scatter file uses the INI file format. It is parsed by the flashing tool to create a memory map layout. Technical Write-Up: Generating a New Scatter File for

Common partition names on MT6761 devices

• PRELOADER, MBR, EBR1, UBOOT, BOOTIMG, RECOVERY, SEC_RO, LOGO, ANDROID, CACHE, USRDATA (or USERDATA), FAT, persist, nvram — names vary across vendors.