violatricola

The firmware 1.4.2 is ok and I see no problems any longer! It was obviously a firmware problem, the connection strength was never the problem (some of the faulty ones were in 2m distance to the next access points) Mainly your advice to connect direct to the device was useful for me as a newbie! So thanks for your help - Case closed! -

It had no effect. But suddenly the "upgrade" to firmware 1.33 was offered. (1.4.0 was installed). This solved at least the problem and so far I have not made the upgrade to 1.4.2 on the i4 devices.

Hm, maybe the problem are two WIFI networks. I use meanwhile an Ubiquity network but the old fritzbox network is working as well. I will switch it off and see, if this changes something. The SSID I replaced with the "xxxx" for privacy reasons. When I did the test, the distance to the next WIFI access point was approx. 6 m only.

Firmware update by direct access via local webui was possible. Update to 1.3.3 solved the problem! With update to 1.4.0 and 1.4.2 beta the problem is there again. So setting "auto-update firmware" might be a bad decision fo the i4. Here are two diagnostics files. I have not noticed something strange in there, but I cannot really read them! This i4 has the software version 1.4.0 and shows the "on-off" problem. Strange for me is, that the IP xxx.xxx.xxx.100 is mentioned, this IP address is not used in the network and the device has .xxx102 diagnostics-shelly-plusi4-data-1.txt diagnostics-shelly-plusi4-debug-log-1.txt

Firmware update by direct access via local webui was possible. Update to 1.3.3 solved the problem! With update to 1.4.0 and 1.4.2 beta the problem is there again. So setting "auto-update firmware" might be a bad decision fo the i4.

I will try it and let you know!

I got the same problem with now 5 off these devices. Some were installed and worked well but they all failed at about the same time. A brand new one had the same fault. So far I have not found a solution, reset has not worked as well. I assume, there is a general problem with a batch of the i4, as now a new version (ver3) is sold. As the device has no outputs, it is not relevant, which is phase and which is neutral. So this cannot be the reason for a problem. I opended one device. The version I got is v0.1.1 date 2021-12-1