Apple has released a new beta firmware version for a range of its wireless headphones, allowing developers and users participating in the public beta testing program to get access to the update before it is widely available. The new firmware carries the build number 9B5042a and applies to AirPods Pro 2, AirPods Pro 3, AirPods 4, AirPods 5 and AirPods Max 2.

The company hasn't revealed what changes are included in this release yet. As is typical with beta firmware releases for AirPods, it doesn't come with detailed release notes detailing new features, bug fixes , or potential performance improvements.
See also: Apple releases new iOS 27 firmware for AirPods for public Beta testers
The update release is part of Apple's software development process, which tests changes before they are released to the general public. However, until more information is available, it is not possible to confirm whether firmware 9B5042a introduces any new features or is mainly focused on fixes and stability improvements.
Which AirPods models are getting the update?
The new beta version covers different categories of Apple headphones, from small wireless models to the over-ear headphones of the Max series.
Specifically, the update is available for AirPods Pro 2, AirPods Pro 3, AirPods 4, AirPods 5, and AirPods Max 2. The rollout across multiple models allows Apple to test the software on different devices and hardware configurations, although this doesn't necessarily mean that all versions will get the exact same changes.
The firmware is a key part of how AirPods work, managing individual functions of the headphones and their communication with Apple devices. Depending on the update, changes may affect connectivity, stability, responsiveness of controls , or the operation of features like active noise cancellation and sound customization.
See also: Apple: New firmware for AirPods with iOS 27 features
At this time, however, there is no confirmation that version 9B5042a brings changes to any of these features.
How to activate beta firmware on AirPods
Installing beta firmware is different from the update process most iPhone or Mac users are familiar with. Apple offers a special option for enabling beta updates, which is available through the settings of compatible AirPods.

For the feature to appear, the headphones must be connected to an iPhone, iPad, or Mac running iOS 26, iPadOS 26, or macOS 26, respectively, or a later compatible version. Eligible users can follow these steps:
- Connect your AirPods to your compatible Apple device.
- Open AirPods settings from your iPhone, iPad, or Mac.
- Locate the option for beta firmware updates.
- Enable trial downloads, if available.
- Leave the headphones connected and follow the automatic update process.
See also: Apple: AirPods with camera won't be released before 2027
Why installation can take hours
Unlike iOS updates, where the user can usually manually initiate the installation, AirPods do not have a corresponding button for directly upgrading the firmware.
To make the process easier, Apple recommends connecting the headphones to an iPhone, iPad, or Mac and plugging them into a power source. For models that use a charging case, the case should also be plugged into a power source, where required. Users then need to wait for the setup to complete automatically.
The wait can be up to a few hours, so it is not necessary to constantly repeat the update attempts. It is preferable to keep the headphones close to the connected device and have sufficient charge to limit possible problems during the process.
