Choose Download Only (safest) or Firmware Upgrade (upgrades partitions).
: Unzip the v6.2404 tool folder to an accessible location. download spflash tool version 6240400000 install
Reinstall the MediaTek VCOM drivers. In Device Manager, look for "MediaTek USB Port" or "Unknown Device" → Update driver → Browse to driver folder. Choose Download Only (safest) or Firmware Upgrade (upgrades