I'm trying to flash my custom STM32L152RET6 board using the command-line version of CubeProgrammer. Initially, everything seemed fine, but I wanted to ensure the firmware couldn't be read out. So, I set the option bytes with -ob RDP=1 to enable read...

Is it possible to use UART3 as the bootloader interface on this chip?I’m able to communicate with UART3 (so the hardware connection seems fine), but I’m unsure about the baud rate—does the bootloader autodetect it, or is it fixed? The bootloader work...