Official code source of Espressif AT firmware

[saif_iot]

Let's say we buy a new Espressif ESP32, and we download ESP-IDF SDK, and we flash the hello-world example.

- Is that mean we overwritten the official Espressif firmware?
- Is that mean our ESP32 no longer support AT command's because the hello-world overwrite it ?
- Is possible to flash the hello-world example with keeping the official AT command's ?

- Where is the official code source of Espressif AT firmware?.
this one seem just an "basic" example https://github.com/espressif/esp-at

Thank you,

[Her Mary]

Maybe you should move to https://www.esp32.com/viewforum.php?f=34 ?