User Manual
User's Guide Fireface UCX © RME
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15.2 Driver Update 
In case of a driver update it's not necessary to remove the old driver first, it will be overwritten 
during the installation. In case of problems the driver files can be deleted manually by dragging 
them to the trash bin: 
USB 
/Applications/Fireface USB Mixer 
/Applications/Fireface USB Settings 
/System/Library/Extensions/FirefaceUSB.kext 
/Users/username/Library/Preferences/Fireface USB Folder 
/Users/username/Library/Preferences/de.rme-audio.FirefaceUSBMixer.plist 
/Users/username/Library/Preferences/de.rme-audio.TotalmixFX.plist 
/Users/username/Library/Preferences/de.rme-audio.Fireface_USB_Settings.plist 
/Library/LaunchAgents/de.rme-audio.firefaceUSBAgent.plist 
FireWire 
/Applications/Fireface Mixer 
/Applications/Fireface Settings 
/System/Library/Extensions/FirefaceAudioDriver.kext 
/Users/username/Library/Preferences/Fireface Folder 
/Users/username/Library/Preferences/com.rme.FirefaceMixer.plist 
/Users/username/Library/Preferences/de.rme-audio.TotalmixFX.plist 
/Users/username/Library/Preferences/de.rme-audio.FirefaceSettings.plist 
/Library/LaunchAgents/de.rme-audio.firefaceAgent.plist 
15.3 Firmware Update 
The Flash Update Tool updates the firmware of the Fireface UCX to the latest version. It re-
quires an already installed driver. 
Start the program Fireface USB Flash. The Flash Update Tool displays the current revision of 
the Fireface firmware, and whether it needs an update or not. If so, simply press the 'Update' 
button. A progress bar will indicate when the flash process is finished (Verify Ok). 
After the update the Fireface UCX needs to be reset. This is done by powering down the Fire-
face for a few seconds. A reboot of the computer is not necessary. 
When the update fails (status: failure), the unit's second BIOS will be used from the next cold 
boot on (Secure BIOS Technology). Therefore the unit stays fully functional. The flash process 
should then be tried again on a different computer. 










