Apple recently began providing developers with access to beta versions of its AirPods Pro firmware, allowing them to test new features before it is released to the public. Apple released a second version of the AirPods Pro firmware (4A362b) last Friday and only now is information about the beta being shared on Reddit.
The second AirPods Pro firmware update adds support for Conversation Boost, a feature that was missing from the first beta.
Conversation Boost is a feature of the upcoming iOS 15 update that uses the beamforming microphones in the AirPods Pro to boost the volume level of conversations, providing aid to those with mild to moderate hearing issues.
The initial AirPods Pro firmware beta added support for FaceTime Spatial Audio and Ambient Noise Reduction, both of which are coming as part of the iOS 15 update.
Only registered Apple developers are authorized to install the AirPods Pro firmware, and the installation process is rather involved and requires Xcode.