1/2 Bug Advisory Title Usage Instructions for Configuring the Console Output Channel for the ESP32-C3 Chip Revision v1.1 Issue Date 2025/11/21 Advisory Number AR2025-006 Serial Number NA Version V1.0 Issue Summary The ESP32-C3 chip revision v1.1 may experience a continuous reboot cycle, preventing normal startup, when the console output channel is reconfigured from UART0 to either the USB Serial/JTAG Controller or a custom UART. Impact Analysis Affected Product Series: This issue affects ESP32-C3 chip revision v1.1. ESP-IDF Affected Versions: ESP-IDF Branch Affected Commit IDs Affected ESP-IDF Versions release/v5.5 and above Commits before ea902d6 (excluded) No official release yet 2/2 release/v5.4 Commits before 05b6d92 (excluded) v5.4-beta1 – v5.4-beta2 release/v5.3 Commits before 3e700ef (excluded) v5.3 – v5.3.1 release/v5.2 Commits before 90f0760 (excluded) v5.2 – v5.2.3 release/v5.1 Commits before 56aae01 (excluded) v5.1 – v5.1.5 Release/v5.0 Commits before aa8e013 (excluded) v5.0 – v5.0.7 Mitigation ESP-IDF Patched Versions: ESP-IDF Branch Fixed Commit IDs Fixed ESP-IDF Versions release/v5.5 and above ea902d6 v5.5 release/v5.4 05b6d92 v5.4 release/v5.3 3e700ef v5.3.2 release/v5.2 90f0760 v5.2.4 release/v5.1 56aae01 v5.1.6 release/v5.0 aa8e013 v5.0.8 1 ESP-IDF release/v5.0 has reached End of Life. Espressif will no longer provide support for this version, including adding new features, fixing bugs, or addressing security issues. Recommendations for Application Developers If your application changes the default console output to USB Serial/JTAG Controller or Custom UART, and you are using an affected ESP-IDF version, it is recommended to upgrade to the patched ESP-IDF version (see the table above). If you encounter any issues during the upgrade process, please provide Espressif with the ESP-IDF version number or Commit ID. We will confirm and handle related matters as soon as possible.