I’ve had the same problem. So, I’ve tried to reflash with the factory firmware as the document.
But, there was some wrong point. The old bin file is linked.
- ESP32-C3_RFTest_108_2b9b157_20211014.bin
the flash tool, ESP_RF_Test_EN_0 have the latest version firmware.
- ESP32-C3_RFTEST_V116_4cfb81d_20230922.bin
Please check the version of firmware!
With 20230922.bin, I’m good.