@Xammo The firmware can you download from here: https://www.tp-link.com/us/support/download/er605/. You can select the hardware version and the previous firmware

@Gfroza More people have the same problem: here and here are two topics

@PRAXXUS which version of Omada do you use? The combination of the new firmware and Omada 5.7.4 doesn't work.

@Loopo I have the same problem/loop. Omada 5.7.4 (linux) and ER605 v2.1.0. My network is also running. 'Clients' is empty. Port information (connection speed etc) is grey/not working. Downgrade won't...

I did try with Omada to downgrade the firmware. Omada can't do that because it looks like it has no connection anymore. I did a factory reset, try to adopt the router again. It keeps failing. After a...

In Omada (Software Controller on my NAS) I did get an notification of an firmware update (2.1.0 Build 20221230 Rel.55248). After installing the firmware the controller says "adopting", "configuring"...