Resetting password on polycom ip 331 - Polycom SoundPoint IP 331 IP Phone

SOURCE: what is the default password for Polycom

Default Passwords:
To get into the web interface, the default username/password is "Polycom"/"456" (Note that this does not work with Safari 1.2.2.)
To get into the Admin interface on the hard phone, the password is "456". (Prior to v1.3.1, the web interfaces to the phone uses "Polycom"/"SpIp" as the username/password.)
The "user password" (not used much) defaults to "123".

To reset a lost admin password to default: at phone boot, during the 5 second countdown, push/hold 468* on the phone. Enter the phone's MAC address as the password. This will reset network info but keep peers loaded. Tested on Soundpoint IP 650.

Testimonial: "Thanx a lot. Although I had managed to find the password for console but the web interface password was still missing. :-)"

SOURCE: reset password

Plug the phone in and allow it to boot up. Once the home screen is displayed, press and hold the 4, 6, 8, and * keys for about three seconds, or until you hear an audio alert and the phone asks you for a password. Enter 456 (default Admin password) and the phone will default itself. If the password has been changed, and 456 does not work, enter the MAC address of the phone as the password. Entering the MAC address of the phone will only reset the Admin password to the default, so it will probably be necessary to repeat this procedure, entering 456 the second time, to factory default the phone.

SOURCE: We tried to put factory

I answered this question for another user:
http://www.fixya.com/support/t8134583-coult_not_using_boot_server_error

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This occurs when the phone is set up to load it's configuration file from a ftp or tftp server and it cannot find the file or server location. If the phone is supposed to do this, please check that the ftp or tftp service is running on the specified server. The server name or ip is specified in the setup of the phone, available when the phone is first booting up. The default username is 'Polycom' and password is '456'. If you DO NOT want your phone to get it's configuration from a network server, enter the setup area and remove the server name or IP address from the appropriate section.
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SOURCE: Polycom IP 501 won't reset to default when using MAC address as password

If your phone isn't on a constant reboot cycle and can boot up, then go into Admin Setting and do a Format File System reset. NOTE: Only try this if you know how to download the software files onto the phone via FTP server. Once you download the latest software your phone should be almost as good as new.