Open-source firmware brings AirPlay 2 and Snapcast to the 2011 Bowers & Wilkins Zeppelin Air

An open-source project replaces the firmware on both boards of the 2011 Bowers & Wilkins Zeppelin Air, adding AirPlay 2 multi-room support and Snapcast to the 30-pin speaker that shipped with AirPlay 1 only. Installation and updates run over USB from a Chrome, Edge or Brave web page using WebUSB, with rollback to stock firmware available the same way. The iPod dock, Spotify Connect and Windows setup do not work, and the project was reverse-engineered and tested on a single unit.