If you need a version slightly newer (e.g., v5.20xx) but still getting auth errors:
: Provides a comprehensive list of versions including v3.1216, v3.1312, and v3.1332 . download sp flash tool old version
SP Flash Tool is a utility application used to flash stock ROMs, custom recoveries, and fix bricked MediaTek (MTK) Android devices. While the latest version is recommended for modern chipsets, legacy versions (v3, v4, and early v5) are frequently required for older hardware or specific exploitation methods (e.g., rooting via mtk-su or bypassing DRAM verification errors). This report outlines where to acquire these versions, which versions are necessary for specific tasks, and the critical safety protocols involved. If you need a version slightly newer (e
(good for Android 7.0 MT6737) https://xdaforums.com/attachments/sp-flash-tool-v5-1744-00-zip.4295649/ This report outlines where to acquire these versions,
Since official MediaTek releases can be difficult to navigate, most users rely on community-maintained archives. How To Use SP Flash Tool (Full Guide)