Resolved! The STM32 Selection Guide 2021 Shows that STM32F407VET6 contains 512K flash, but actually the flash could be wroten from address 0x0800 0000 to the 0x080F FFFF, So what's the problem?!
The STM32 Selection Guide 2021 Shows that STM32F407VET6 contains 512K flash, but actually the flash could be wroten from address 0x0800 0000 to the 0x080F FFFF, So what's the problem?!