If hard reset fails, force the board into bootloader:

If the above steps do not resolve the “Software Down” issue on a Wittenborg FB 5100:

  • Provide the main board revision number (silkscreened on PCB: e.g., REV 2.3) and the exact error LED sequence (e.g., “Red LED blinks 3 times, pause, 1 blink”).
  • Request a pre-flashed replacement motherboard – Wittenborg offers exchange units for ~€350–€500 excluding core deposit.

    • A transient glitch often mimics a total software failure.