How to disassemble / open the Shelly Plug S?

After flashing an ESPHome update on my Shelly Plug S, it does not connect anymore to the wifi nor does it start its own access point. I will have to flash it by serial.

How do I access the board on this device?

There should be a screw hiden inside the earth plug.

got the pinout from this post

Flashing can be anoying, you could solder it but I just pushed some breadboard wires in the holes and applied sideways pressure while flashing to ensure proper contact.

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Thank you very much, that worked