Read build info of the Bluetooth LE controller via HCI does not work

Hello,
I'm trying to read the build info of the Bluetooth LE controller using BT_HCI_OP_VS_READ_BUILD_INFO, but I get the following warning:

<wrn> bt_hci_core: opcode 0xfc08 status 0x01

My starting point as the hic_pwr_ctrl example (NCS2.9.0) and I#m successfully using BT_HCI_OP_VS_READ_CHIP_TEMP to get the chip temperature.

Unfortunately, it does not work with BT_HCI_OP_VS_READ_BUILD_INFO, as described above.

6131.hci_pwr_ctrl.zip

Many thanks for your suggestions in advance.

Kind regards,

Christian

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