Mitel 6940 Firmware Upgrade

Connect the phone via a reliable Power over Ethernet (PoE) switch or a dedicated DC power adapter. A power loss during an upgrade can brick the device.

You need the official Mitel 6940 firmware file. The current stable branch as of 2025 is generally or higher. Obtain this from:

This is the most common way to update a phone already on your network. Open a web browser and enter the phone’s IP address Log in using and the appropriate password. Navigate to Advanced Settings > Firmware Update Upgrade Software in some versions). Upload the file directly from your computer or specify a Download Protocol mitel 6940 firmware upgrade

The phone will display an IP address. Access this address via a browser on a computer on the same network.

A failed firmware upgrade can brick your phone (render it non-functional). Do not skip these steps. Connect the phone via a reliable Power over

If the phone is "stuck" or you are setting it up from scratch:

: The phone will contact the server, find the newer version, and begin the download. Important Tips The current stable branch as of 2025 is generally or higher

The 5-inch TFT screen can develop calibration issues or graphical glitches. Newer firmware updates improve the screen refresh rate and gesture recognition.

Log in using the administrator credentials (default username is usually admin ). Navigate to the or Advanced Settings tab.