The device isn't being detected properly because the battery is too low or needs to be physically disconnected/reconnected.
Is your high quality? (Avoid cheap charging cables). Does the Scatter file match your specific CPU? Have you tried the Volume Down + Plug-in method? sp flash tool error status ext ram exception link
If you have a backup of your original ROM, use the scatter file from that backup. 2. Update/Reinstall MediaTek VCOM Drivers The device isn't being detected properly because the
Remove the battery (if removable). If not, hold the Power button for 15 seconds to ensure it is fully off. Click in SP Flash Tool first. Does the Scatter file match your specific CPU
If that fails, try plugging it in without holding any buttons at all. 5. Upgrade SP Flash Tool
You are trying to flash firmware that wasn't designed for your specific hardware revision.