Yesterday, Apple released an updated firmware for MagSafe chargers, which is designed for the iPhone 12, iPhone 13 and iPhone 14, as well as the new AirPods Pro 2 wireless headphones.
This firmware number 10M1821 replaces the previous one (10M229). Please note that the “Settings” application is displayed under a different number – 255.0.0.0 (the previous firmware was numbered 247.0.0.0).
The MagSafe Charger was released in fall 2020 with the iPhone 12 series and is the third firmware update that Apple has released in four years.
Apple does not provide a changelog, so we do not know what new features or bug fixes the new firmware includes. However, given the recent release of the iPhone 14 and AirPods Pro models? 2, the firmware may have optimizations for these devices.