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How to remove RDP protection (level 1 to level 0 ) using UART

Roshan
Associate III

‎2021-05-20 07:29 AM

Hi all,

Is there any method available for program RDP 0xBB to RDP 0xAA using CLI only through the uart or spi using USB ( without SWD or JTAG)

Thanks

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TDK
Guru

‎2021-05-20 09:21 AM

If in bootloader mode, the Readout Unprotect command can be used to (erase the chip and) remove readout protection.

https://www.st.com/resource/en/application_note/cd00264342-usart-protocol-used-in-the-stm32-bootloader-stmicroelectronics.pdf

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