Mitel Firmware

Mitel Firmware

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    SIP firmware must be obtained through a Mitel reseller. May also be available for download via BitTorrent or on The latest firmware ( is available here: 

     Important Notice!! 

     IMPORTANT! Please read before proceeding with the upgrade to Release 7.2 mitel firmware. 

     If you are running Rel 3 software, you will need to upgrade to Rel 4 prior to going to It is strongly recommended not to upgrade through the GUI. Only the Boot (Set) upgrade should be performed if you are running software lower than 

     Although account settings tend to be saved between firmware upgrades. So it is recommended that a factory reset is performed at the end of the process. Phones not reset might suffer from miscellaneous issues, such as random SIP re/registration failures and phone setup Web pages not showing. 


    SIP Phone, mitel firmware

    For all SIP Phone types running any software previous to Rel 7.2, this includes Rel 3.0, Rel 3.1, Rel 4.0, Rel 5.0 MUST upgrade to Rel prior to upgrading to Rel 7.2. 

    Rel MINIMUM is required as a stepping point up to Rel 7.2. Any other method of upgrade could result in corrupted Flash Memory on the SIP Phone resulting in a permanently dead phone. 


    When upgrading to Rel 7.2 from any previous software through the Rel, not all SIP Phone Feature/Parameters are carried forward. The Key Definition such as Shared Line, Menu Items, Feature Keys, etc. are not carried forward. (The only exception is Speed Dials, which are carried forward.) And Call Logs are not carried forward. 


    In general, it is important to upgrade the older firmware in sequence – e.g., v3 -> V4 -> V5 -> V6 etc. without skipping any releases. Failure to do this (e.g., upgrading from V3 directly to V6) may brick the phone. 


    View the Firmware Version 


    To view the firmware version using the Web Configuration Tool: 

    Access the Home Page of the Web Configuration Tool and click Firmware Updates. 

    To view the firmware version using the Superkey Menu Interface. 

    1. Press (SUPERKEY).
    2. Press the Line 2 key. Both the main and boot firmware versions appear on display.
    3. Press (SUPERKEY) to return to the default display.


    Upgrading the Firmware 


    IMPORTANT! Please read before proceeding with the upgrade to Release 7.2. 


    1)Save the config file to the desktop. 

    2)Set up a TFTP server; if one is not readily available mitel firmware, there are many shareware/freeware available on the Internet. Make sure that you write down the IP address of where you have the TFTP server running. You then want to unzip the latest release build into the TFTP root of your TFTP server. 

     Power the phone

    3)Power the phone while holding down the mitel firmware  * and seven key to switch to SIP mode; hold down the keys until you see change confirmed on the set display. 


    4)Assuming that the phones are using DHCP, power the phone while pressing the volume up arrow. You are now in the configuration mode of the phone. Navigate through the menus (Network parameters, modify static settings) until you see a place to change the TFTP server address. Enter the IP address of your TFTP server from step 2 above. 


    5)Keep pressing the Down Arrow key and save your changes mitel firmware. 


    6)While the set is booting you will see an option to upgrade via TFTP, select yes (You may have to press * for yes depending on the set). 

    Firmware upgrading

    7)You should then see the firmware upgrading. Once complete, you will see the date and time appear on the phone. 


    8)Once the firmware upgrade is complete mitel firmware, you then need to delete build 4 out of the TFTP root. You then unzip the latest release five builds into the TFTP-root. 


    9)Then simply repeat steps 4,5, 6 and 7. Step 5 is very important as the network setting returns to factory default after the update. Once release five firmware upgrade you may upgrade to the Release 7.0 Firmware 


    To upgrade the firmware using the Web Configuration Tool: mitel firmware

    So Access the Configuring Network Settings and Updating Firmware sections of the Administrator’s Web Configuration Tool. 


    To manually upgrade the firmware in the phone via Web from 


    1. On the Web Configuration Tool home page, click Firmware Update. The Firmware Update page appears.
    2. In the Automatic Firmware Upgrade section, from the HTTP Automatic  mitel firmware. Firmware Upgrade list, select Off.
    3. From the TFTP Automatic Firmware Upgrade list, select Off , mitel firmware.
    4. In the Manual Firmware Upgrade section, from the Choice of Download Type list, select the required server type (i.e. HTTP or TFTP). If you select None, then HTTP takes priority over TFTP mitel firmware.
    5. Depending on the server type selected in step 4 mitel firmware, enter either the URL for the HTTP Server or the URL for the TFTP Server.
    6. Do one of the following:

    (Recommended) To install the latest firmware but leave the existing phone configuration files unchanged, click update. A confirmation screen appears mitel firmware. 

    To install the latest firmware and reset the existing phone configuration files to new default settings, click Update & Reset Config Files. 

    1. If you clicked Update & Reset Config Files in step 6, re-enter the SIP authorization password and thePPPoEand user passwords, if required mitel firmware. To re-enter this information, do one of the following: 

    Use the Web Configuration Tool 

    Use the phone’s Superkey menu interface (see “Configuring in the Main and Boot Programs” in the Online Help) 

    Edit a saved configuration file mitel firmware. For more information on configuration files mitel firmware, (see About Configuration Files in the Online Help). 

    1. Click OK.

    Note: The boot program and boot menu only support IP format for the TFTP server mitel firmware. If a URL is configure, the URL will display as, and the boot program will not download from the URL. 


    To upgrade the phone’s firmware through the Super key Menu Interface from mitel firmware 


    1. Press (SUPERKEY), and then press >> until SETTINGS & OPTIONS? appears mitel firmware.
    2. So Press OK, and then press â–¼ until UPGRADE FIRMWARE?
    3. Press OK. CHOOSE PROTOCOL appears. mitel firmware
    4. Press the desired protocol (HTTP or TFTP), mitel firmware, or press AUTO. BEGIN UPGRADE NOW?

    5.Press CONFIRM. mitel firmware, The downloading process begins, and the phone reboots. This process may take approximately 1 to 2 minutes. When the time and date appear on display mitel firmware, the download and reboot are complete, and the phone is ready for use. 


    On more than one occasion, 5220 and 5215 phones have upgraded from V1 and old V4 firmware to the latest V4 firmware successfully but then have failed to download V5 (‘Checksum error’). These phones were subsequently taken directly from V4 -> V6 without any apparent problems mitel firmware.  

    If your TFTP updates keep failing, make sure that in Network Settings ‘Local Tone Code‘ is set to a valid option – for example, CA, US or GB. Also check in Advanced settings that ‘Language Code mitel firmware:‘ is similarly set (en_CAen_GB or en_US). If not, set these options mitel firmware – it doesn’t matter if they are not correct for your country just as long as *something* is set – save your settings and try again. Also, note that some country settings (such as en_GB are only present in later firmware versions). 

    So An excellent, free TFTP server (for Windows) can be download from here: 

    Non-dual-mode (Minet only) 5215 and 5220 phones cannot be ‘upgraded’ mitel firmware with SIP firmware (happy to be proved wrong though – if you manage to do this, document it here!) .