Non-encrypted binary can't be flashed properly

[Lyap94]

Hi everybody,

I am using a platform that is based on STM32. The developers of this platform have provided to me the firmware image as an encrypted .bin file. When I flash it via USB everything is fine.

Then I change their code and recompile everything using STM32CubeIDE. The produced binary is not encrypted. When I try to flash it, the flashing to the microcontroller fails. 

Could it be due to the fact that it is not encrypted? 

Note: when I flash my code using the .hex and an st-link everything works well.

Thank you in advance.

[Pavel A.]

If the "bootloader" of this device expects encrypted binary, and you give it something else, of course it will fail.

As you've seen, it works when  flashed directly over ST-LINK.

[Lyap94]

Thanks for your reply Pavel A.

So I guess I should try to encrypt the binary the same way they do.