Ensure you are holding the correct buttons (usually Volume Down or both Volume buttons) when plugging in the USB cable to trigger the VCOM port. Final Tip: Use the "Format All + Download" Caution
. Sometimes an older version (like v3.x) is required for legacy devices, while newer chips need v5.x or v6.x. DA File Selection : Manually select a compatible Download Agent (often MTK_AllInOne_DA.bin sp flash tool stuck on download da 100
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