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STM32U585I-IOT02A: Unable to revert RDP from DC to AA after password set

shivss
Associate II

Hello,

I am working with an STM32U585I-IOT02A development board and using STM32CubeProgrammer.
I changed the RDP level to DC and set a password. After that, I am unable to get back to RDP level AA.

  • I tried entering the correct password, but the unlock option does not disable the protection.

  • I also attempted the "unlock RDP1 level" process, but it does not seem to work.

  • Currently, I am unable to flash any code onto the device.

Is there any way to recover the board back to RDP AA level and make it programmable again?
What is the correct procedure to unlock the RDP DC level after a password has been set?

Thanks in advance.

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