Jestli nezabere defaultní kód 12345, zkus Hard reset, nepomůže-li ani ten, tak jedině servis se zápisem nového firmware.

3. hard reset - hold the following buttons * (star key), 3 (number button) and talk/green key. turn on the phone and do not release those buttons until you see the Nokia boot up screen. once you feel the phone power up you can let go off the power button while still holding all three buttons ( for Nokia 5800XM - use the following buttons to do a hard reset, /GREEN/RED/CAMERA keys pressed all at once on power up. this will only work on 5800's that have firmware version 20... and up. ) For Nokia N97 (unofficial version but works) is SHIFT /SPACE BAR / BACKSPACE while holding the power button. Again do not let go until you see the handshake screen.

If these codes are not working the only thing for you to do is contact your Nokia Care Center/Service for assistance.