Electronic device and method of software or firmware updating of an electronic device

A method, comprising:

• updating software or firmware of an electronic device, the updating performed by the electronic device and including:
• reading a partition header including an encrypted version number from a memory;
• controlling a software or firmware update of the electronic device;
• storing a first value in a one-time programmable memory;
• decrypting the partition header stored in the memory based on the first value stored in the one-time programmable memory, the decrypting to retrieve the encrypted version number of the partition header;
• comparing the retrieved version number with a version number of a software or firmware update in order to determine whether the version number of the software or firmware update is larger than the retrieved version number;
• incrementing and storing the first value in the one-time programmable memory if an update is performed;
• encrypting the version number of the software or firmware update based on the new first value;
• and
• writing a new partition header with the updated encrypted version number into the memory.

An electronic device, comprising:

• a memory having a first partition and a second partition, the first and second partitions configured to store first and second components respectively, the first and second partitions having first and second partition headers respectively, and the first and second partition header having encrypted first and second version numbers respectively, the first and second version numbers corresponding to the first and second stored components;
• a one-time programmable memory configured to store a first value;
• a memory driver unit configured to read the first partition header from the memory and write an updated first partition header to the memory, the updated first partition header having an updated encrypted version number;
• an encrypt-decrypt unit configured to retrieve the first version number of the first partition header by decrypting the first partition header based on the first value, the encrypt-decrypt unit configured to create an updated first partition header by encrypting an updated first version number corresponding to an updated first component based on an updated first value;
• and
• an update agent unit configured to compare the retrieved first version number with the updated first version number to determine whether the updated first version number represents that the updated first component is a later version of the stored first component, and, if the updated first component is a later version of the stored first component, the update agent unit is configured to generate the updated first value and direct storage of the updated first value in the one-time programmable memory.