STM32WB5MMG - Unable to re-update FUS firmware after first update on custom board

[efocuk59]

Hello everyone,

I am working with a custom board based on the STM32WB5MMG. On the very first attempt, the FUS firmware update works fine and completes successfully. The problem starts when I try to update the FUS again. Once it has been updated for the first time, any further attempt to re-update the FUS fails.

If I delete the firmware and try to flash it again, STM32CubeProgrammer gives the error Error: failed to download image!

Even after full chip erase, when I try to re-install the FUS firmware, I end up with the same error.

For reference, I am using stm32wb5x_FUS_fw.bin V1.2.0 with STM32CubeProgrammer, I am programming the device via ST-LINK.

Has anyone else experienced this with STM32WB5MMG?

Any advice or suggestions would be greatly appreciated.

Thanks in advance.

[saulmann0035]

I had the same problem a while ago. What is the solution? +11111

[STTwo-32]

Hello @efocuk59 

Could you please try using the STM32CubeProgrammer V2.20.0 and the .bin FUS file from the STM32CubeWB V1.23.0. If you still have an issue, attach the value of your option bytes (all of them). Also, attach the screenshot that you have will using the last STM32Cubeprogrammer and clicking on the read Fus version button. 
Best Regards.

STTwo-32