你可以禁用压缩 OTA 的方式，这样就能回滚了。因为回滚的前提是，分区表里有两个不同的 AT 固件，例如 a 和 b.
如果采用压缩 OTA 方式，那么 a 就是解压后的 b (或 b 就是解压后的 a)，实质是同一个固件，这样的回滚也没有实质的意义。
如果采用非压缩 OTA 方式，a 固件 != b 固件，这样就能彼此之间进行回滚。

禁用压缩 OTA 的方式：
menuconfig > Bootloader config (Custom) > Enable compressed OTA support > 取消勾选

另外需要调整分区表里 ota_0 和 ota_1 分区，使得大小相同 ...

you can follow this: https://github.com/espressif/esp-at/tre ... e_security

听起来像是管脚冲突了。你可以根据这个文档，将 “AT 接口功能调试” 打开，设置为 Debug，看看具体发生了什么吗。
https://docs.espressif.com/projects/esp ... _logs.html

Hi PhonoESP , thank you for sharing your solution and the detailed explanation. I'm glad you found a workaround that works for you.

Regarding your question about checking the Wi-Fi connection status:
If you are using the AT firmware, you can use the command AT+CWSTATE? to query the connection ...

该功能近期将会添加，届时将在这里更新状态。

感谢您对乐鑫产品和 AT 方案的关注！

Could you please follow this guide:
https://docs.espressif.com/projects/esp ... _logs.html

Enable AT Interface Function Debugging to see what happened.

@ARG2004
1. Yes, you can change default pin by at.py script:
https://docs.espressif.com/projects/esp ... figuration

2. Pin compatible with ESP32-C2-WROOM-02. But not pin compatible with ESP32-C3-WROOM-02.

@ARG2004 , Oh no! You should follow this guide to compile AT firmware, step by step:
https://docs.espressif.com/projects/esp ... le_it.html

please give it a try.

Good to know~

Hi PhonoESP ,

Thank you for the detailed description. I'd like to help clarify a few points:

1. Could you let me know which ESP-AT firmware version you are using, and which AT commands your application sends? This will help us understand the exact behavior.

2. If you have configured passive ...