Since the ABCL software version 0.26 (19.1.2010) a special key combination can be used to revert factory defaults:

  • power off the unit
  • hold down the two most left keys in the lower row of the PS16's keyboard (keys 1 and 2):

  • connect the power
  • after a short moment the message "Factory defaults? Press key 16 to confirm" appears on the display:

  • to confirm press the upper right key (while still holding they key 1 and 2!):

  • release all keys

  • the unit reverts to factory defaults and reboots