| Error Message | Likely Cause | Solution | |---------------|--------------|----------| | “File size mismatch” | sp5001.bin is for a different flash chip (256KB vs 512KB) | Re-download correct version using exact device model number | | “Invalid checksum” | Corrupted download or modified file | Compare SHA-1 hash with vendor’s reference | | “Device not responding” | Wrong boot mode or poor connection | Retry after power-cycling; check serial/UART wiring | | “No signature found” | sp5001.bin is not meant for this bootloader version | Extract vendor-specific header using a script (see below) |
import struct from pathlib import Path from datetime import datetime, timezone sp5001.bin
You download a firmware file named T-MSMDEUC_1230.4.exe . After extracting, you see: | Error Message | Likely Cause | Solution