Go ahead and open the WiZ smart socket with a spudger, and a lot of brute force
It turned out to be built around an WiZ 8285 1517PT Board
GPIO0 is on the rear, as a small test pad. Connect to GND when power on.
Vcc 3,3V ,GND , RX,TX is accessible on the board connectors.
Flash with tasmotizer
Connect and use this template.
Reassemble and Glue the Plug.
Pinout and info