STM32WB55CEU6 and BLE stack programming

[JL_Loyd]

Dear community,

On my board, a STM32WB55CEU6. My aim is to add the DFU BLE possibility for code update.
On the first picture, you will see mu CUbeProgrammer Interface.
After click on "Read FUS infos", i'm able to read status.

The FUS is ok, but the stack version ( 0.0.0) seems to say "no version".

When i'm trying to flash the official binary of BLE_STACK_light (Light, full, extended,... same problem).
I'v got an warning.



An idea ?

[Imen.D]

Hello @JL_Loyd 

Is the anti-rollback activated?

As mentioned in the following application note How to use STMicroelectronics firmware upgrade services for STM32WB MCUs: 

Important: Before activating Anti-rollback, ensure that a wireless stack is correctly installed, and that it has not been
deleted. If it is activated without any wireless stack installed, the FUS registers 0xFFFFFFFF as the new version, and it is not possible to install a wireless stack.

For more details, please refer to the "2.4 Anti-rollback activation" section in the AN5185.