A method for updating code images in a system includes booting a first image of a code with a sub-system processor, receiving a second image of the code, performing a security and reliability check of the second image of the code with the sub-system processor, determining whether the security and reliability check of the second image of the code is successful, storing the second image of the code in a first memory device responsive to determining that the security and reliability check of the second image of the code is successful, designating the second image of the code as an active image, and sending the second image of the code to a second memory device, the second memory device communicatively connected with the first memory device and a main processor.