Apple releases beta firmware 9B5045a for select AirPods models

Apple has initiated a new firmware testing phase for its wireless audio hardware, releasing version 9B5045a to developers and public beta participants. The update affects a broad range of current models, including the AirPods Pro 2, AirPods Pro 3, AirPods 4, AirPods 5, and the latest iteration of the AirPods Max.

The company has not disclosed specific release notes regarding the update, leaving the functional changes or bug fixes contained in the package unconfirmed. This approach is standard for Apple’s internal testing cycles for audio accessories.

To install the firmware, users must be running beta versions of iOS 26, iPadOS 26, or macOS 26 or later. Activation requires enabling the beta firmware toggle within the device settings. The update process is automated and occurs while the headphones are charging and connected to the paired device, as AirPods lack a manual trigger for firmware installation.