Newer versions of OpenOCD expect stm32f1x mass_erase 0 or stm32f2x mass_erase 0 instead of stm32x mass_erase 0 So far, there doesn't seem to be an explicit F4 command, so leave that untouched for now.
Newer versions of OpenOCD expect stm32f1x mass_erase 0 or stm32f2x mass_erase 0 instead of stm32x mass_erase 0 So far, there doesn't seem to be an explicit F4 command, so leave that untouched for now.