I bought the board from Digikey and it should be an Espressif official product. If it's about the hardware problem, is it possible to return it?

I have a ESP32-S2-SAOLA-1 board. When I run WiFiScan example in Arduino environment with ESP32S2 module, the program is running properly and I can see the routers nearby. But when I run SimpleWiFiSever example with ssid and password modified, the program is waiting for connection for ever. Did I mis...

You are right. After setting the target to esp32s2, the s2 board can be flashed.
The pdf version of IDF programming guide doesn't mention about the target settings. Do you know when the document will be updated?

I got a ESP32-S2-SAOLA-1R board and want to use IDF v4.2 for the development in Window 10 environment. The serial port is COM4. I used the default menuconfig settings. idf.py build was running OK and generated the .bin file. When I run idf.py -p COM4 flash, I got the error message "This chip is ESP3...