Unable to update latest firmware "Crash Error code 14"

Do an offline firmware upgrade, follow these steps:

  1. Put Midihub in bootloader mode by turning it on while holding down the button. All LEDs will be on in this mode.
  2. Connect using 1.15.3 Editor.
  3. Do Device → Flash Firmware…
  4. Give it the .bfw Firmware file from the 1.15.3 release.
  5. Once done, reconnect to Midihub, it should already be running 1.15.0 Firmware with blank memory.
  6. Do Device → Import Everything… and give it the fixed up .mhd file I sent you via PM.

Afterwards it should work well again.