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.

{"NAME":"WIZ8285-1217PT","GPIO":[1,1,1,1,544,320,1,1,224,32,1,1,1,1],"FLAG":0,"BASE":18}

Reassemble and Glue the Plug.

Done

Pinout and info

https://usermanual.wiki/WiZ-Connected-Lighting/1517PT-4540931.pdf