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Unlock KOSS DVD players - DVD hack

KOSS C220 / C928 / KD210 / KD230 / KD250 / KD260 / KD260-2 / KD270

  1. Open the disc tray
  2. Press MENU
  3. Press 1, 6, 7 (or 7, 6, 0 )
  4. Enter RC or press MUTE for Codefree
  5. Close the disc tray

KOSS KD305 / KD365 / KS2503 / KS3101 / KS3102 / KS3112 / KS3122 / KS3123-2 / KS4102 / KS4110 / KS4122 / KS4125 / KS4190 / KS5121 / KS5190 / KS5192

  1. Turn on the player (without a disc inserted)
  2. Press MENU
  3. Press 1, 6, 7, 1, 9
  4. A menu should pop up
  5. Press OK
  6. Press the button for the desired RC (0=codefree)
  7. Exit menu

KOSS KD216 / KS2100S-2 / KS2117 / KS2708 / KS4127 / KS4192 / KS4380-2 / MVS1854

no known hacks

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