Impossible to update FW of Shelly 1PM

Hello,

I purchased last week a Shelly 1PM. I manage to discover it and add it to a room.

But I do not manage to put it on the cloud. I get the message that the device secret code is wrong.

So I am running this 1PM locally. And I can control it from the App when I am on the same network.

I noticed in a thread that this may be because of the firmware.

But it is impossible to update the this 1PM Firmware.

The same day I updated the FW of a EM and PlugS. So there is no problem in doing so on my side.

For now the 1PM is only connected to power on L & N. No other connection is yet put in place.

Symptom 1:

When I initiate a FW upgrade, the device comes back after a while proposing the same upgrade.

And the installed FW is still the original one.

Symptom 2:

The device status led goes off regularly for no reason , without me interacting with the device or the app.

Symptom 3:

When I put in place the temperature add-on it does not show in the device page.

Symptom 4:

It is impossible to enable the cloud on this device. All my other devices are cloud enabled with no problem.

I start to feel that the wifi module of the device is not stable and it gets disconnected regularly. None of my other Shelly devices suffer from this.

Can this be?

Anyone wlese had experienced this?

After trying for 3 hours, many factory resets and negotiations with the device, it managed to update its FW and get it to the cloud.

I suspect that this is because the 1PM was only connected to the power and had not other connections.

I feel that it went OK as soon as I plugged in the temperature sensor.

I had a similar behavior with an EM that could be updated and added to the cloud once a clamp was connected.