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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Not all Fritz!Box devices can be upgraded to the most recent firmware

Posted by jpluimers on 2018/11/30

I forgot to document this earlier.

Many Fritz!Box devices cannot be upgraded to recent firmwares. The behaviour differs on hardware revisions of the same model. I’ve seen it happen on Fritz!Box 7360 devices, but others are could be affected too.

You can get the firmware revision using the trick here: FRITZ!Box call

If your hardware revision is affected, do not expose it to the outside world.

You could still turn it into a local switch though: [WayBackConvert FRITZ!Box 7360 to Managed Switch (or even Access Point) having it’s own IP address: Setting up the FRITZ!Box as an IP client.

I did this before even discovering about the hardware revision limits as I wanted to keep the full phone history when migrating from ADSL to fiber (which came with a brand new Fritz!Box 7490) and could use the extra LAN ports.

Fritz!Box 7360 hardware revision v1: limited to firmware 06.3x

Fritz!Box 7360 v1 with firmware 111.06.30

Fritz!Box 7360 v1 with firmware 111.06.30

Fritz!Box 7360 hardware model v1 cannot be upgraded to anything newer than Firmware 06.30 (that’s why this is not directly connected to the internet; it’s just combined VoIP and 4-port LAN-switch device.

Model v1 has Firmware file prefix 111 as seen on the right. See these links:

The firmware limit is more like 06.3x as there are two specific updates for specific markets:

  • Belgian Proximus network: New in FRITZ!OS 6.31 DSL: fix for fallback profile in proximus network.
  • German DSL network: Ab 6.33: Aktualisierungen und Verbesserungen auf aktuellen Sicherheitsstand

Other hardware revisions

There are quite a few lists floating around of Fritz!Box hardware revisions, but I’ve not found a centrally administered one yet.


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