Thank you, currently the MCU is running FUS.STM32WB Firmware Upgrade Service - stm32mcuPlease connect the board to STM32CubeProgrammer, click on "Start Wireless Stack" button and flash the application again. It should fix the issue.Best regards,FK

The event code seems okay. Can you please step further?In APPE_SysEvtReadyProcessing function, the code should jump at WIRELESS_FW_RUNNING.APP_BLE_Init() function must be called to start advertising.Best regards,FK 

Hello,can you please place a breakpoint in APPE_SysUserEvtRx function to see the event code? (app_entry.c)You can start debugging by clicking on the bug button.Best regards,FK

Hello,you can check the ST-Link firmware in STM32CubeProgrammer by clicking on "Firmware upgrade" button. Best regards,Filip Kremen

Hello,please try to reinstall ST-Link Server, it should solve the issue. Best regards,Filip Kremen