How to upgrade Cisco IP Phone 7945G to SIP Firmware
Items you will need:
- Cisco IP Phone 7945G
- Cisco Switch with POE Ports
- Any PC that can download software and change Firewall settings
- At least 2 Ethernet Cords
Preparations:
PC:
2. Press the Windows key, Type: "Windows Defender Firewall" and open it, Click Advanced Settings on the sidebar, then click Inbound Rules, and click new rule. Make sure the type of rule is on Program, and click next. Click "This Program Path" and fill in the path for where your IPSwitch TFTP Server program is. It should be in C:\Program Files (x86)\Ipswitch\TFTP Server. Make sure to click TFTPWindowsService.exe and not the program itself. Click next and click "Allow the connection", next again, and checkmark everything, then add a name to it. It doesn't matter what the name is, then click finish.
3. Click the New Rule again to add a new rule, but this time for the rule type you need to click "Custom". Then press next twice, click the Protocol Type where it says "Any" and click ICMPv4. Again, click next until you need to give it a name, and again, it doesn't matter what the name is.
How to Upgrade the Phone Firmware
1. Setup the DHCP Server on the switch.
Connect your PC to the Console port and set up the DHCP Server.
The configuration should be set to:
ip excluded-address 192.168.2.1 192.168.2.50
ip dhcp pool VOIP
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
dns-server 192.168.1.1
option 150 ip 192.168.2.51
2. Connecting the Phone to the switch.
Connect the Cisco IP Phone to the switch with an ethernet cable. It should cycle through a few different screens, but make sure it's upgrading. If it isn't, unplug the cable and plug it back in while holding the pound sign (#) until the two buttons on the right side of the screen blink a red color. Then press 123456789*0# which will soft reset the phone. It should then turn back on with the looping screen.
3. Configuring the TFTP Server.
Open the IPSwitch TFTP Server program, go to options, set your root folder to your directory where your firmware folder is, go to security and allow downloads and uploads, then click OK. Once the TFTP Server starts, the phone should start upgrading.
