For detailed instructions regarding auto provisioning Snom M900, M700 and M300 devices, please see the auto provisioning guide here.
Provisioning the firmware
In order to provision the firmware you must use a separate XML file with the firmware-settings as first tag (root tag). Here is the more exact procedure:
Step 1 - add a <file> tag to your main configuration file, pointing to a separate firmware provisioning file, for example:
Step 2 - create test_firmware.xml and place it on your HTTP server. Here is an example content of the test_firmware.xml file for upgrading to version 450B11: