Apple has issued an encrypted firmware update for the MagSafe 3 two‑meter charging cable used with MacBooks. This release has surfaced in Apple Insider’s reporting, noting that the update carries the designation 10M1543.
Typically, Apple does not publish detailed notes for accessory updates, and the MagSafe 3 cable is no exception. The available information confirms only the firmware name and suggests that the update may enhance performance and strengthen security features within the cable’s operation. There is also speculation that compatibility may be broadened to include additional devices in the future, expanding the accessory’s usable ecosystem.
Current guidance indicates that the MagSafe 3 type cable is officially supported on select models, specifically the 2022 M2-based MacBook Air and the 2021 14‑inch and 16‑inch MacBook Pro configurations. This limited compatibility helps users understand where the firmware will be automatically applied and how the update delivery works in practice.
In terms of how updates are applied, there are no special steps needed. The firmware update is designed to install automatically when the cable is connected to a qualifying device, simplifying the user experience and keeping the accessory up to date without manual intervention.
Part of the broader conversation around MagSafe accessories includes ongoing discussions about power cord standards and device ecosystems. Some sources have suggested that iPhones and other devices may rely on Apple‑certified power cords for optimal performance, a topic that has generated diverse opinions across technology communities. It is useful for readers to note that these discussions reflect industry expectations and not official, universally adopted requirements. [Apple Insider]