The Plus H&T device cannot be updated or connected to the cloud.

Hello,

I bought a Plus H&T device second-hand. The device correctly displays temperature and humidity, and there are no issues with local access via the web UI.

However, the problem is that it does not appear in the cloud (Shelly Smart Control), and the device itself shows no connection to the cloud.

Firmware update attempts via the web UI do not work (nothing happens).

I have two other identical Shelly devices, and I have no issues with those. What I noticed is that the firmware version on this particular device is very unusual:

Firmware version: plushtprod2

Firmware build ID: 20220608-072353/plushtprod2-g4f32651

Web build ID: 1.5.5-e68a84a

Suspicious logs:

1749395232 - L2 - fd: shelly_http.cpp:184 0x3ffddfc0 HTTPS GET https://updates.shelly.cloud/update/PlusHT (SSL CA shelly_cloud.pem)

1749395247 - L0 - fd: shelly_http.cpp:100 0x3ffddfc0 HTTP Request timeout
1749395247 - L2 - fd: shelly_update.cpp:172 Check for updates received bad response: -104 Deadline exceeded: HTTP request timed out!
1749395247 - L2 - fd: shelly_notification:132 Status change of sys: {"available_updates":{}}

Is there any way to update such a device, or should I consider returning it?

BR,

Michum