I have 4 of these smartplugs and all 4 showed an available firmware upgrade today.
So I triggered the update on one. Went offline, did not come online after a while. Had to powercycle this plug and the BridgeP, now it is online again.
But none of the other 3 can be updated. They show an update is available, but when clicking it only the update changelog shows.
Mine had this update a few days ago. I did it from the Web, and after a long wait, an update error popped up, and the S60 disappeared and acted as if dead. I didn’t touch it for about 5-10 minutes, and suddenly it came back to life with the new firmware.
Managed to fix the issue by trial and error: It is a display error potentially connected to dark mode (unconfirmed).
The update button on the upgrade screen is invisible and can be triggered by blindly clicking in the lower corner.
The confirmation popup fortunately is visible and works.
What remains weird is that this display bug did not show for the first plug. Only for device 2-4.