Hi ! I faced the same problem and was able to solve it by calling esp_nimble_hci_and_controller_init() before nimble_port_init() for esp-idf-4.4 as explained here : https://docs.espressif.com/projects/esp-idf/en/v4.4.2/esp32/api-reference/bluetooth/nimble/index.html#programming-sequence Hope that he...