Youll configure this tftp server to host the upgrade files via tftp server (theres an option to configure the working directory in the program to use for the stored firmware files on the windows machine – this must be set correctly!).Ĭ. You will also have to configure your windows machine to use ip address of 192.168.1.1 and subnet mask of 255.255.255.0. Every one of these problems was due to using the incorrect version and/or having their firewall on).ī. I have had many people complaining about their phones not obtaining a correct ip address and also the files not being sent correctly. Go here to download the tftp/dhcp server – ĭownload and install version 3.23 (<–YOU MUST DOWNLOAD AND INSTALL THIS VERSION. We are going to use a windows based machine and load tftp/dhcp software on it which will make our windows machine a server for our phones.Ī. Step 2: Download and configure the DHCP/TFTP server

If you just have one, you must remember to extract all the files. You will have several files in this directory. tar.gz and extract it to a directory using winzip or winrar. If you are downloading an older version of the SIP/SCCP firmware and it only comes in a. (if cisco doesnt allow you to download the firmware, check here: or for phone firmware).ī. Download the firmware for the specific phone you are using. Goto and create a login if you do not already have one.

Only problem is since there is no application running, there is no place to specify the address! Thank goodness for DHCP option 150 which does this for us when the phone grabs an IP address after loading the bootloader.īelow are instructions to upgrade/convert any Cisco 7940, 7941, 7960, 7961, 7970, 7971, 7942, 7962, 7945, 7965 IP phone to any firmware you want from the Cisco web site (SIP/SCCP), and to recover any cisco phone which may have screwed up somehow while upgrading firmware (like if you get the protocol application invalid message).Ĭisco may require you to have a smartnet contract before you download the firmware, but if you do not have one, there are firmware files available on the internet. Without an auto-provisioned tftp server address, the phone will only complete half the upgrade and come up with an error message of “protocol application invalid.” This just means that the phone could not complete the second half of the upgrade and needs the tftp ip address to be specified.

But what is essential in upgrading these phones is a DHCP server with option 150 enabled – an option to auto-provision the tftp server ip address when the DHCP server hands out the regular ip address to the phone.

Once the bootloader is upgraded, all passwords and networking information on the phone will be wiped out. 7940/60 Cisco phones update in two stages. They just need a tftp server to update its firmware and it doesnt even have to be located on the asterisk/phone system itself.

Cisco 7945 sip firmware download