I got my new board, When I want to download the .hex file, I tried to use the keil 5.14 and ST-link utility ,failed.
the message I got from the ST-link utility is:Can not read memory！ Disable Read Out Protection and retry.
I didn't do anything to the MCU.
the device:STM32F427IG. it's new.
another question:Why I can't read the Flash size?(Unkonwn)
look forward your help.