After I change option byte on stlink, swd (stlink) is not connected.

[togsin]

Dear all~

After I change option byte on stlink, swd (stlink) is not connected.

read out protection : level 2 , BOR Level : level 3

After not connect. pop up

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Let me know how to recover option byte.

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Thanks​

[Andreas Bolsch]

See e,g, https://community.st.com/s/question/0D50X0000BrAeq3SQC/how-to-downgrade-level-2-read-out-protection-in-stm32f7-board