--- title: Symphony I/O Firmware and Software Installer Release 5.0 description: Symphony I/O Firmware and Software Installer Release 5 --- [Skip to content](https://knowledge.apogeedigital.com/symphony-i/o-firmware-and-software-installer-release-5#main-content) English Show submenu for translations [Contact us](https://knowledge.apogeedigital.com/kb-tickets/new?hsLang=en) ![Apogee Logo White.png\]](https://knowledge.apogeedigital.com/hs-fs/hubfs/Apogee%20Logo%20White.png?height=40&name=Apogee%20Logo%20White.png) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://knowledge.apogeedigital.com/kb-tickets/new) - Go to apogeedigital.com Go to apogeedigital.com How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://knowledge.apogeedigital.com/?hsLang=en) 2. [Legacy Products](https://knowledge.apogeedigital.com/legacy-products?hsLang=en) 3. [Symphony I/O Mk 1](https://knowledge.apogeedigital.com/legacy-products?hsLang=en#symphony-i-o-mk-1) # Symphony I/O Firmware and Software Installer Release 5.0 **[Download Release 5.0 here.](https://knowledge.apogeedigital.com/hubfs/Software%20Installers/Symphony%20IO/SymphonyIO_Release_5.0.dmg?hsLang=en)** - 16x and Rosetta series users, please consult the [Legacy Interface Release Notes.](http://www.apogeedigital.com/pdf/Legacy-Interfaces-Release-4.4-Notes.pdf) **Who should update?**  - Users running or upgrading to OSX 10.10 Yosemite - New Users setting up their Symphony system for the first time - Users on 10.8.5 or 10.9.5 who would like the new Features and bug fixes ***NOTE:** Symphony Users who are currently running 10.8.4 or lower and don’t plan to update their OSX should not update to Release 5*     **New Features** - Compatibility with Mac OS X Yosemite and Mavericks (10.10 and 10.9) with continued support back to OSX 10.8.5 - Up to 3 Selectable Speaker Sets can be toggled and controlled from Maestro Command-click lets you enable multiple speaker sets at the same time - Dim functionality for Main Outputs and Headphone outputs - Sum To Mono functionality for Main Outputs and Headphone outputs - Various bug fixes   **Before you update** - Please note critical Maestro settings such as Trim levels before performing a firmware update. Parameters will be reset after installing new software. - Unplug headphones and mute speaker volume before updating firmware.   **To update** - Please follow the steps listed here: [Updating Symphony I/O Firmware and Software.](https://knowledgebase.apogeedigital.com/symphony-io/updating-symphony-io-firmware/) - Do NOT plug directly in to USB 3.0 port for firmware update. 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