At boot the phone did not requested any files from tftp, so the provisioning was disabled. I have recently obtained provider1 locked spa508 phone and the seller provided an unlock code. To disable this hack on your phone simply remove DHCP option 66 from your configuration, or disable provisioning. If for any reason one would wish to lock the factory reset from user edit your configuration xml file, set these 2 values to Yes: This procedure was successfully tested on spa303 firmware version 7.5.3 and 7.6.2b. There is an issue with upgrading from 7.4.3a, to overcome it just remove the condition to look like this: Once the phone downloads the SPA504G-cfg.xml file the admin password will be changed to 123 or it will remove the need for password.įrom there you can go to menu of the phone, factory reset, and enter your new password if asked.ĭelete or rename on tftp server or you will see your phone reboot every minute.Īnd create one more file on tftp server spa504G.cfg URLs are irrelevant.Īfter reboot the phone asks tftp server for a file name: SPA504G-cfg.xml Some of this file is unnecessary I just did not want to mess with it and used an example file converting the phones from SIP to SPCP. Now we need to create some files on tftp server: I use ddwrt and point my 66 option to an external IP address of my tftp server.
What you need is a DHCP server with option 66.
Most of the phones ware not even getting an IP from my DHCP server, but I was able to overcome it by disabling VLAN in network configuration. One cannot fake secure certificate easily. Keep in mind this method worked only on the phones that I had available: spa504G, firmware 7.5.2b and 7-6-2b admin password locked by a provider1 and requesting provisioning from https server. The other options include cisco default password forcing the phone to provision via web browser: The spoofing may not work if configuration is requesting secure https connection, or if the phone is expecting an encrypted configuration file. Some may even be successful in spoofing DNS or IP and let the phone pull the file from our equipment resetting or changing password. Many suggested to attempt to sniff packages coming from the phone to carrier’s ftp, tftp, http or https server. Many of us, myself included have been looking all over for the procedure factory reset cisco SPA504G phone admin password locked. How to factory reset Cisco spa504g without admin password? Well, read on. Admin password locked Cisco phone spa504G.
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