Embedded system and method of controlling non-volatile memory to perform firmware update

An embedded system comprising:

• a non-volatile memory comprising:
• a first block configured to store first firmware;
• and
• a second block configured to store second firmware;
• and
• a processor coupled to the non-volatile memory, and configured to:
• compare a version of the first firmware to a version of the second firmware;
• if a comparison result of the version of the first firmware and the version of the second firmware indicates that the second firmware is newer than the first firmware, perform a boot process using the second firmware;
• and
• if the boot process is successful, duplicate a first portion of a firmware image to the first block to upgrade the first firmware upon a firmware upgrade request;
• wherein the first portion of the firmware image is generated according to a firmware object code and a first address parameter;
• a second portion of the firmware image is generated according to the firmware object code and a second address parameter;
• and
• the first portion and the second portion of the firmware image are execution in place (XIP) code having identical versions.