Hello.
I am currently developing a board using the stm32f411ret6 chipset.
I confirmed that the first firmware download worked properly on one of the boards I am developing.
However, after attempting to download the second firmware, I encountered an issue where the option byte was displayed as 0xFF.
I tried changing the option byte in various ways, but all attempts failed.
Furthermore, I attempted to boot using the system bootloader, but it failed. Could the flash memory itself be damaged?
Below is the link to my initial community inquiry.
https://community.st.com/t5/stm32-mcus-products/what-is-the-way-to-fix-stm32f411re-option-bytes-0xff-error/m-p/832817#M284580
Thank you
*This post has been translated from Korean to comply with the ST Community guidelines.
