CW Hotline Firmware version 0.47:
  Added support for Iambic A mode
  Muted received audio when in speed adjust mode
  
CW Hotline Firmware version 0.46:
  Improved key debouncing
  Disabled link LED in VBand mode
  Fixed speaker disabling not saving

CW Hotline Firmware version 0.45:
  Implemented fast startup when no WiFi selected