Boot the Nokia device into single user mode
To boot an IP440 into single user mode first restart the box.. When you see the "boot:" prompt enter "-s" and press "enter" within 10 seconds. When it boots into single user mode it will ask for the shell, just press "enter" to accept the default "sh."
To boot an IP500 or higher into single user mode, first restart the box. When you will see the prompt "Entering autoboot mode. Type any character to enter command mode." You have 5 seconds to press any key.
To boot at IP300 device into single user mode, first restart the box. When you see the prompt "Verifying DMI Pool Data" press the number 1. Then you will see a "Type any character to enter command mode." You now have 5 seconds to press any key. After pressing any key type "boot -s" to enter single user mode.
Change Password in IPSO 3.5 and Higher
Run "/etc/overpw" from the single user shell and follow the prompts to change the password. Type "reboot" to boot into multi-user mode, go into voyager and change to a permanent password.