| Issue | Solution | |-------|----------| | | 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) |