Had the same issue here is the file , and infos i had from Allen & heat
In this case you will need to use a Mac, running OS X10.11, to roll-back the mixer Audio Firmware BEFORE re-connecting to the PC.
- this process is detailed below, and device driver installer packages required to confirm the issue are also attached for you to use.
Please ensure you follow instructions as directed; this will be important to enable me to assist remotely in any further troubleshooting should it be nrequired
Re-install (or check current version of) Audio Firmware v1.4.1
Run the v1.3.9 downgrade installer, then re-install v1.2.0 Audio Firmware.
i) Extract the FWDowngrader_XDB4_V139.zip from the ‘AFW_roll-back_XDB4’ bundle,
- expand the .zip and run the FWUpdater_XONE_DB4_V139.app, following on-screen prompts on the Mac
ii) Extract the FWUpdater_XDB4_V120.zip, expand, then run the FWUpdater_XONE_DB4_V120.app following on-screen prompts.
- XONE
B4 Mixer is now running Audio firmware compatible for use with WindowsPC computers running v2.9.30 Device Drivers
NOTE:
Where/if subsequent connection to a Mac system is required:
- re-installation of OSX [v1.4.1] Audio Firmware is necessary after connecting the mixer to a Mac, and before running DJ/DAW software and/or CoreAudio media players.
Where/if ongoing, subsequent, connection to a Windows PC is required:
- the XONE
B4 mixer Audio Firmware needs to revert to v1.2.0 – via interim installers - before re-connecting to the PC
For ongoing use across both platforms, each process must be repeated as applicable.
ADDITIONAL NOTES:
DB mixer Audio Firmware must be re-updated to current release for use with Mac running v3.3.2 Device Drivers.
- in this case, interim v1.3.9 installers are NOT required.
v3.3.2 Device Drivers must be installed on the Mac BEFORE a XONE
B4 mixer is connected via USB cable, or Audio Firmware updates can be installed.
Copy of v1.4.1 Audio Firmware installers for Mac OS X is included in v332 bundle - 'Xone
B4 Mac Driver v3.3.2 (Dec 2015)
Copy of v1.2.0 Audio Firmware installers for Mac OS X is also included in v322 bundle - ‘Xone
B4 Mac Driver v3.2.2 (July 2014)’
http://www.allen-heath.com/ahproducts/xonedb4/#tab5
Equivalent v1.2.0, v1.3.9, or v1.4.1 installer applications are not available for Windows PC at this time.
Solution outlined above should work OK. However, if you encounter problem when reverting to v1.3.9, or v1.2.0 via Mac, with re-establishing connection to a Windows PC after v1.2.0 Audio Firmware is installed, or following re-installation of Audio Firmware for subsequent use with Mac OS X, please report the matter to us.