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How to upgrade M400 from 610.3 (out-of-the-box) to 650.2:

    • upgrade
    • access web interface with e.g. admin / snom 
    • remove the configuration server link, change the default password under HTTP configuration page.
  • base has already been configured by your service

check with your provider, if he adds parameters correctly

use rescue procedures if web access is lost

Once you have read and understood, here is the download link to upgrade:

Binaries download

  • M400 SHA-256: 8505a1063b911f60ddf8334d803e2a7b475299c4a3e130cf77607b466b8779f8