Today my Deco m5 upgraded to firmware "1.5.1 Build 20201022 Rel. 66804".
After that my internet stopped working, it keeps reporting there is no internet connection, but there is. Before the upgrade of the firmware everything worked fine.

I've tried to reset my main deco and setup a new network but it keeps saying there is no internet connection and thus cant finish the configuration.

I've tried to place the v1 as main deco and the v3 as main deco, same problem.

My setup: 1x v3 m5 deco and 3x a v1.1 In accesspoint mode with an ethernet backbone.

Whats wrong?

UPDATE:

I was in contact with the servicedesk, the problem was solved after 4 reset attempts. Finally the internet connection was pickedup and i could solve this problem by setting up a new network.