In the world of MediaTek firmware modding, low-level Android development, and device unbricking, the scatter file is your most critical asset. For the MediaTek MT6761 (Helio A22)—a popular quad-core chipset found in budget devices like the Redmi 6A, Nokia 3.1, and various Alcatel and Realme models—understanding how to produce a new scatter file is essential.
Whether you are porting a custom ROM, repartitioning storage, or recovering a dead boot device, here is everything you need to know about generating a fresh scatter file for the MT6761. mt6761 scatter file new
Date: October 26, 2023
Subject: Structural Analysis of the MT6761 (Helio A22) NAND/eMMC Scatter File
Chipset: MediaTek MT6761 (Target Platform)
Tools Referenced: SP Flash Tool, MTK BROM, Python mtk-tools Mastering the MT6761: How to Generate and Use
MT6761 firmware expects these non‑negotiable partitions: Required tools and files
| Partition | Purpose | Typical Size |
|-----------|---------|---------------|
| preloader | BootROM 1st stage | 0x40000 (256KB) |
| pgpt | Primary GPT | 0x2000 (8KB) |
| proinfo | Production info (IMEI, MAC) | 0x300000 (3MB) |
| nvram | Wi‑Fi/BT calibration | 0x500000 (5MB) |
| lk | Little Kernel (bootloader) | 0x200000 (2MB) |
| boot | Kernel + ramdisk | 0x2000000 (32MB) |
| recovery | Recovery image | 0x2000000 (32MB) |
| system | Android system | 0xC000000 (3GB typical) |
| vendor | Vendor files | 0x8000000 (128MB) |
| userdata | User apps & data | Remainder of eMMC |
| metadata | Encryption metadata | 0x1000000 (16MB) |
| Issue | Solution |
|-------|----------|
| Wrong platform name | Must be exactly MT6761 (case‑sensitive) |
| EMMC_BOOT_1 for preloader | preloader resides in boot partition, not user area |
| Missing sgpt partition | Secondary GPT is auto‑generated – do not include |
| Block size mismatch | Keep block_size: 0x20000 (128KB) – MTK default |
| SP Flash Tool “Invalid scatter” | Remove trailing spaces, ensure no BOM (UTF‑8 without signature) |