Click next to "Download-Agent" and select MTK_AllInOne_DA.bin (usually in the tool's folder).
The Download Agent (DA) is not compatible with your device's secure boot. You may need a specific "DA" file provided by the manufacturer. sp flash tool 5.2032
Resolved several "S_TIMEOUT" and "S_FT_DOWNLOAD_FAIL" errors found in earlier v5 builds. Click next to "Download-Agent" and select MTK_AllInOne_DA
Better handling of Secure Boot DA (Download Agent) and Authentication files. sp flash tool 5.2032