Butterfly Display firmware/FlarmNET update on Core and Portable (English)

Butterfly firmware/FlarmNET update on Core:
  - Copy Butterfly firmware (.BFW) and/or flarmnet (.BFN)
    to USB stick.
  - Connect stick to Core.
  - Switch on system with BF display knob pressed.
  - Verify BF display goes into UPDATE MODE with 'WAITING', then 'LOADING'.
  - Wait until BF display restarts (can take up to two minutes).

Butterfly firmware/FlarmNET update on Portable:
  - Copy Butterfly firmware (.BFW) and/or flarmnet (.BFN)
    to micro SD card.
  - Insert micro SD card into slot.
  - Activate menu entry Info -> Disp. update.
  - Switch on system with BF display knob pressed.
  - Verify BF display goes into UPDATE MODE with 'WAITING', then 'LOADING'.
  - Wait until BF display restarts (can take up to two minutes).