Firmware upgrade method and apparatus, receiving end device, and storage medium

A firmware upgrade apparatus, applicable to a wireless charging receiving end device, wherein the apparatus comprises:

• a first charging control module, configured for controlling, when an upgrade message for charging firmware is received during wireless charging, the wireless charging receiving end device and a wireless charging transmitting end device to continue wireless charging according to a preset original data packet of the charging firmware;
• a data packet updating module, configured for updating a pre-stored data packet of the charging firmware in a first storage region according to an upgrade data packet of the charging firmware in the upgrade message during the wireless charging, so as to upgrade the charging firmware;
• and
• a second charging control module, configured for controlling, when the charging firmware is successfully upgraded, the wireless charging receiving end device and the wireless charging transmitting end device to carry out the wireless charging according to an upgraded charging firmware in the first storage region.