I can understand the point that it is not possible nor wanted that someone is running the AES decryption in Flash. I was under the impression that the image will be loaded to RAM and the encryption and the certificate check will be done there. Especially with this type of MCU and the 2MB of Ram there should be plenty of space to have the SBL and the Application in Ram. Are there any plans to implement such a function or is this up to us to implement such a functionality ?