[STM32WB55 Nucleo] SHCI_FUS_CMD_NOT_SUPPORTED Error on SHCI_C2_FLASH_EraseActivity

[KBehrVincent]

I updated The FUS of my STM32WB55 Nucleo Board to FUS v2.2.0.0 and the BLE Stack to v1.24.0.3

After this change Flash erase operations fail at the call of `SHCI_C2_FLASH_EraseActivity` with the error code `SHCI_FUS_CMD_NOT_SUPPORTED`
Additionally BLE does not advertise anymore.

The log from the `Read FUS infos` returns some warnings:
notably:

10:35:12 : Warning: Option Byte: nSWboot0, value: 0x0, was not modified.
10:35:12 : Warning: Option Byte: nboot0, value: 0x1, was not modified.
10:35:12 : Warning: Option Byte: nboot1, value: 0x1, was not modified.
10:35:12 : Warning: Option Bytes are unchanged, Data won't be downloaded

The entire log:

10:35:12 : Warning: Option Byte: nSWboot0, value: 0x0, was not modified.
10:35:12 : Warning: Option Byte: nboot0, value: 0x1, was not modified.
10:35:12 : Warning: Option Byte: nboot1, value: 0x1, was not modified.
10:35:12 : Warning: Option Bytes are unchanged, Data won't be downloaded
10:35:12 : Time elapsed during option Bytes configuration: 00:00:00.000
10:35:12 : Succeeded to set nSWboot0=0 nboot1=1 nboot0=1 
10:35:12 : Opening and parsing file: 0x495_FUS_Operator.bin
10:35:12 : Memory Programming ...
10:35:12 :   File          : 0x495_FUS_Operator.bin
10:35:12 :   Size          : 8.00 KB 
10:35:12 :   Address       : 0x08000000
10:35:12 : Erasing memory corresponding to segment 0:
10:35:12 : Erasing internal memory sectors [0 1]
10:35:12 : Download in Progress:
10:35:12 : File download complete
10:35:12 : Time elapsed during download operation: 00:00:00.276
10:35:12 : Application is running, Please Hold on...
10:35:12 : Reconnecting...
10:35:12 : Reconnected !
10:35:13 : FUS_STATE_IDLE
10:35:13 : Read FUS state command execution finished
10:35:13 : UPLOADING ...
10:35:13 :   Size          : 4 Bytes
10:35:13 :   Address       : 0x20010010
10:35:13 : Read progress:
10:35:13 : Data read successfully
10:35:13 : Time elapsed during the read operation is: 00:00:00.000
10:35:13 : UPLOADING ...
10:35:13 :   Size          : 4 Bytes
10:35:13 :   Address       : 0x20010014
10:35:13 : Read progress:
10:35:13 : Data read successfully
10:35:13 : Time elapsed during the read operation is: 00:00:00.000
10:35:13 : UPLOADING ...
10:35:13 :   Size          : 4 Bytes
10:35:13 :   Address       : 0x8001FFC
10:35:13 : Read progress:
10:35:13 : Data read successfully
10:35:13 : Time elapsed during the read operation is: 00:00:00.000
10:35:13 : UPLOADING ...
10:35:13 :   Size          : 4 Bytes
10:35:13 :   Address       : 0x58004080
10:35:13 : Read progress:
10:35:13 : Data read successfully
10:35:13 : Time elapsed during the read operation is: 00:00:00.000

The option bytes:

{
  "deviceId" : 1173,
  "bitNameToValue" : {
    "RDP" : 170,
    "BOR_LEV" : 0,
    "nBOOT0" : 1,
    "nBOOT1" : 1,
    "nSWBOOT0" : 0,
    "SRAM2RST" : 0,
    "SRAM2PE" : 1,
    "nRST_STOP" : 1,
    "nRST_STDBY" : 1,
    "nRSTSHDW" : 1,
    "WWDGSW" : 1,
    "IWDGSTDBY" : 1,
    "IWDGSTOP" : 1,
    "IWDGSW" : 1,
    "IPCCDBA" : 0,
    "ESE" : 1,
    "PCROP1A_STRT" : 511,
    "PCROP1A_END" : 0,
    "PCROP_RDP" : 1,
    "PCROP1B_STRT" : 511,
    "PCROP1B_END" : 0,
    "WRP1A_STRT" : 255,
    "WRP1A_END" : 0,
    "WRP1B_STRT" : 255,
    "WRP1B_END" : 0,
    "SFSA" : 208,
    "FSD" : 0,
    "DDS" : 1,
    "C2OPT" : 1,
    "NBRSD" : 0,
    "SNBRSA" : 16,
    "BRSD" : 1,
    "SBRSA" : 0,
    "SBRV" : 249856
  }
}

 How can I solve this issue?

[Christophe Arnal · Accepted solution]

Hello,

The CPU2 is currently running the FUS. You need to Start the Wireless Stack. This can be done from CubeProgrammer as you can see in your screenshot.

Regards.

[KBehrVincent]

Thank you,
that worked!
Turns out I had done so, but to confirm, I always pressed `Read FUS infos` which seams to have stopped the wireless stack?
Regards