Ensure the "scatter file" (the map for the flashing process) is the correct one for your exact phone model and variant.
Re-install the VCOM drivers and try a different USB port or cable. BROM Error: sp flash tool 480
This error typically shows up with the message: S_SECURITY_SECURE_USB_DL_IMAGE_HEADER_ERROR (480) Ensure the "scatter file" (the map for the
: Conflicting drivers from other devices are a primary cause. Use a tool like USBDeview to uninstall old MediaTek, VCOM, or Preloader drivers, then perform a fresh installation. or Preloader drivers
The tool is designed for versatility, handling everything from basic updates to emergency repairs. Working with SP Flash Tool - GeeksforGeeks
Newer MediaTek chips require updated instruction sets. If you are using a version from three years ago on a modern phone, Error 480 is inevitable.