Bose Brings LE Audio and Auracast Beta to QuietComfort Ultra Gen 2

Bose has released firmware version 10.12.12 for the QuietComfort Ultra Headphones Gen 2, adding Bluetooth LE Audio and Auracast as beta features. The $449 headphones are the first Bose headphones to support Auracast, according to The Verge.

The beta focuses on LE Audio, a newer and more efficient way to send sound over Bluetooth. Bose says it includes unicast audio, a direct one-to-one stream for music and calls, for compatible Android and Windows devices. On Android, support is currently limited to certain devices with Bluetooth 5.2 or newer.

LE Audio does not behave the same on every host. Results vary with the Bluetooth software stack, the radio hardware, and operating system settings. A phone or PC that appears compatible may still connect with classic Bluetooth audio by default.

Auracast builds on that LE Audio base. It lets a single source broadcast audio to many compatible headphones at once, like a local radio station for headsets. This update therefore adds two patterns at once: one-to-one unicast for personal listening and calls, and one-to-many broadcast reception for shared audio.

Version 10.12.12 is not only about wireless. Bose also improved audio over wired USB, including a balance control between game sound and voice chat, and better compatibility with web conferencing apps. USB routing and chat-mix control affect whether one headset can move between gaming, media, and work-calling apps without manual switching. Meeting-app compatibility often comes down to call-button controls, whether microphone choice is remembered, and how the headset shows up to browser-based clients.

Delivery is still through the app. Bose says QuietComfort Ultra Headphones 2nd Gen firmware updates are automatically downloaded and installed through the app to keep the device up to date. That makes the phone app the update path even when the headphones are mainly used wired to a PC or console.

Bose plans to bring Auracast to more models. Spokesperson Tim Williams said QuietComfort Headphones Gen 2 should get the beta firmware next. The company has not called this final code. The beta label leaves room for compatibility fixes as more transmitters and receivers appear.

This release follows an earlier update for the line. A QuietComfort Ultra 2 update in March removed key features. Current headphone firmware changes codec choice, broadcast scanning, USB identification, and conferencing behavior in a single package.

The broader context here is practical testing. The limited Android list shapes fleet testing, and the USB and conferencing notes need close checking alongside Auracast. Regression risk is real after the March removal. Near-term value is less about public venues and more about proving LE Audio unicast in daily use. IT teams can check connection stability, movement between LE Audio and classic fallback, battery drain on long calls, and differences across Android makers and Windows Bluetooth systems. Helpdesk scripts will need to separate LE Audio pairing from joining an Auracast broadcast, since users will confuse them.

In my view, Bose is ordering this correctly by starting with opt-in beta LE Audio on a flagship before widening Auracast. Broadcast audio only becomes useful when transmitters in TVs, phones, laptops, and venue systems are predictable. Headset readiness comes first, and that opens the way for shared listening later. Worth noting for administrators is to list which headphones and hosts in their environment actually show LE Audio and Auracast controls today, then test USB chat mix and conferencing changes apart from wireless changes. That separation will make it easier to isolate faults when users report that audio routing changed after 10.12.12.