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STM32 ST-Link Utility v4.0.0 gives message "could not update the option bytes" but option bytes updated

Question asked by Dmitry Bravikov on Dec 29, 2016
Latest reply on Dec 30, 2016 by Imen D

Hello,

 

I use ST-Link Utility v4.0.0 and STM32F103RC.

 

Command

ST-LINK_CLI.exe -c SWD -OB RDP=1

gives message "could not update the option bytes" but option bytes updated. And command returns an error code.

 

GUI gives the same message.

 

It happens for F1 but not for others (e.g F4).

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