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Published Date: 17. Jan 2025



To install a new firmware version on a base station and/or handset, please follow the instructions provided in the firmware update guide.


Known limitation: M65 utf-8 text does not show correctly. Hardware is not supporting utf-8, please downgrade to pre 7xx versions.

Please read the  release notes carefully before upgrading.

WARNING - Please be sure to read this Information!


M5 repeaters not supported. Use M6 repeaters with V730B100.

Downgrade to 530B10 is possible on M900, but will reset all  "User" and "Engineer" profiles and passwords. (<530B10 leads to loss of password)

After upgrading from <=530B10, the base asks to set new passwords for "Engineer" and "User". Make sure you either provision the passwords or you change them immediately !!! A strict password policy will be applied.


This version has two additional user profiles introduced after 530B10. ("User" & "Engineer")

  • The base will ask for new passwords for these profiles after the upgrade. To avoid entering new passwords by hand you shall provision secure default passwords of your choice instead. Make sure you are choosing a strong password.

    Users and Passwords in the configuration to change:

    <http_user>admin</http_user>
    <!-- <http_pass>**********</http_pass> -->
    <http_basic_user>User</http_basic_user>
    <!-- <http_basic_pass>**********</http_basic_pass> -->
    <http_engineer_user>Engineer</http_engineer_user>
    <!-- <http_engineer_pass>**********</http_engineer_pass> -->

802.1x is enabled by default and cannot be disabled.

The Base device will perform network authentication using its client certificate. Network-side validation of the Snom SHA2 Snom Certificate Authority certificates is mandatory.

Please reboot the base station(s) (chain reboot in multi cells) before triggering the upgrade, to free up some memory and avoid any issues.



How to Update a DECT Device

  • Firmware update server address: https://dect.snom.com
  • Required version: 750 (for the bases M400, M900)
  • Required branch: 200 (for the bases M400, M900)
  • Required version:  750   (for the handsets M30, M70, M80, M90)
  • Required branch: 200  (for the handsets M30, M65, M70, M80, M90)
  • Required version:  670 (for the headset A190 and voice prompts VP_A190_v0670_b0001.fwu)
  • Required branch: 01  (for the headset A190)

M85 patch version (vibration alarm fix):

  • Required version:  760   (for the handsets M85)
  • Required branch: 100  (for the handsets M85)

Base Binaries download

Handset Binaries download