Household appliance firmware update

A household appliance comprising:

• one or more processing units for controlling electrically and/or electronically controllable components of the household appliance according to a corresponding instructions set during a first operating mode of the household appliance, wherein each instructions set corresponding to a processing unit is installed at the processing unit;
• and
• a communication unit for allowing a data communication between the household appliance and an external server through a communication network, wherein the communication unit is coupled to the one or more processing units via a data bus, and wherein the communication unit is configured to:
• receive from the external server an update data distribution comprising, for each instructions set installed at a corresponding processing unit of the one or more processing units, a corresponding update data package comprising a latest version of the instructions set;
• and
• carry out the following operations during a second operating mode of the household appliance:
• preventing data communication between the household appliance and the external server by deactivating a portion of the communication unit responsible for establishing the data communication;
• and
• providing to each one among a set of selected processing units the corresponding update data package, each selected processing unit of the set of selected processing units being selected based on a comparison between a version of the instructions set installed at the corresponding processing unit with the latest version of the instructions set included in the corresponding update package;
• wherein each selected processing unit is configured to update the corresponding instructions set installed thereat with the latest version of the instructions set included in the corresponding update package received from the communication unit.