1/1 End-of-Life Advisory Title End-of-Life Advisory for ESP-IDF v4.2 Release Branch Issue date 2023/06/30 Advisory Number AR2023-004 Serial Number NA Version V1.0 This advisory serves as a formal notification of the End-of-Life (EOL) for ESP-IDF v4.2 release branch in accordance with Espressif’s IDF support policy. ESP-IDF v4.2 release branch reached EOL in June 2023, announced on Espressif’s IDF support policy page on GitHub accessible via the link here. With EOL, new features, bug fixes, and security fixes will no longer be supported on this branch. Customers who are currently using ESP-IDF v4.2 release branch for ESP32 and ESP32-S2 series products development are encouraged to upgrade their projects to more recent ESP-IDF releases, such as ESP-IDF v5.0.x. If you have questions regarding Espressif’s IDF support policy and options to upgrade from EOL IDF release branches, please contact Espressif.