Snom 710 Factory Reset/Update VIA TFTP Server
To Update your phone you will need a local IP address.
Press the Settings key > Press 5 Maintenance > Press 1 System Info (Make a note of the IP address {192.168.0.39} and Gateway {192.168.0.1} you'll need this for the procedure below).
If you cannot access the settings menu? Please refer to the KB Article Finding your local IP Address.
Remove the power source from the phone.
While holding down the # key restore the Power after 5 seconds.
Keep holding the # key until you see the message Rescue Mode.
Press 2 Recovery Via network
The next screen will ask for a local IP address (Obtained from the procedure above).
Use the phone keypad to input the following information.
Local IP Address: 192.168.?.? (Use the address found above {192.168.0.39}) Press the Check-mark.
Local IP Subnet Mask: 255.255.?.? (Found from First procedure above {255.255.255.0}) Press the Check-mark.
Local IP Gateway: 192.168.?.? (Found from First procedure above {192.168.0.1}) Press the Check-mark.
TFTP Server Address: 204.11.52.130 Press the Check-mark
Press 3 TFTP.
You will see the following message: Downloading File: snom710-r.bin please wait.
This process could take up to 15 minutes to complete.
Do not interrupt the process