Enhanced over-the-air programming of power management integrated circuits

A first electronic control unit (ECU), comprising:

• a first processor;
• and
• a first power management integrated circuit (PMIC),
• wherein the first processor is configured to:
• initiate an over-the-air (OTA) update of a second PMIC in a second ECU connected to the first ECU,
• determine whether the OTA update of the second PMIC completed successfully,
• based on the OTA update of the second PMIC being completed successfully, cause a second processor in the second ECU to power on and disable a first connection between the first processor and the second PMIC to allow an OTA update between the second processor and the first PMIC, and
• based on the OTA update of the second PMIC not being completed successfully, perform a retry of the OTA update on the second PMIC after each unsuccessful completion of the OTA update of the second PMIC.

A method comprising:

• receiving, by a first processor associated with a first power management integrated circuit (PMIC), executable images for programming the first PMIC and a second PMIC;
• initiating, by the first processor, an over-the-air (OTA) update of the second PMIC;
• determining that the OTA update of the second PMIC completed successfully;
• and
• based on the OTA update of the second PMIC being completed successfully, causing, by the first processor, a second processor associated with the second PMIC to power on and disabling a first connection between the first processor and the second PMIC to allow an OTA update between the second processor and the first PMIC.