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Apple Releases Firmware Update for 140W USB-C Power Adapter

Apple today released a firmware update (version 1.4.90) for its 140W USB-C Power Adapter. It is unclear what is included in the latest firmware, as Apple does not publish release notes for this. The update will be installed automatically over time when the power adapter is plugged in and connected to a Mac or other device. There is no way to manually apply the update. This article, Apple Releases Firmware Update for 140W USB-C Power Adapter first appeared on MacRumors.com Discuss this article in our forums

9 Sep 2026 2:05 am