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Can't upgrade Firmware on NUCLEO-WB15CC

Associate III

I am trying to upgrade my Nucleo board to Wireless firmware stack v1.17.0 from GitHub (Address: 0x08021000), but I always get the Warning:

FUS_STATE_ERR_UNKNOWN after upgrading.

And when I try to start FUS, I get:

Error: FUS_STATE_ERR_UNKNOWN: Unknown error 

I am pretty sure I flashed the Wireless stack before on this board. I am using STM32CubeProgrammer v2.14.0

ST Employee

Hello @tester ,

You can follow instructions about FUS and Wireless Stack update in this wiki page.

Check this post that may helped you: Solved: STM32WB5MMG power removed while updating FUS.


When your question is answered, please close this topic by clicking "Accept as Solution".

Thank you for the reply, do you know by any chance what the expected SBRV value is for the NUCLEO-WB15CC? It seems like I can still change the option bytes, but when I try to change it to 0x33D00, I get "Input value: 0x33D00 for Option Byte: SBRV, is not valid"

My current SVRC value is 0x11800, which according to the wiki should mean FUS running?

FYI: SFSA also seems to be ok, as it reads 0x8C

Associate III

@Imen.Ddo you think there is a realistic chance that this board is bricked? I just read multiple issues like this, but they are mostly related to STM32WB55 and not WB15.

Associate III

Any updates on this @Imen.D ?