Update 2 – Firmware update has been deployed. Best way to update seems to be deleting the app, forget BT devices and reinstall then do a factory reset on the unit.

Update – PRX One Firmware and app to be released 28 April 30April 9am PT.
Compact on the May 16

Notice to all JBL PRX One and EON Compact PA System Owners:

We strongly advise against updating to the latest firmware and companion app at this time. JBL has confirmed they are actively working on solutions, but current updates are causing significant performance issues.

Critical Issues Affecting Updated Systems:

• PRX One: Complete effects failure, preset parameter loss, and Bluetooth connectivity/volume problems
• EON One Compact: Connection failures and Bluetooth volume inconsistencies
• EON One MK2: Firmware initialization errors and Bluetooth volume control problems

Immediate Recommended Actions:

1. Disable automatic updates on all connected mobile devices (phones, tablets)
2. Maintain your current firmware version until JBL releases a stable update
3. Avoid any Bluetooth audio implementation if your performance relies on this functionality

For Previously Updated Systems:

If like me you already had turned off auto app updates the JBL systems still work fine, though some may have some minor issues with preset parameters and . What I do is before the gig I go through and turn off then back on the effects and EQ on each channel I use, and the master settings.
Then turn off and back on all the anti feedback settings.
Same for the monitor out setting that I use for a powered foldback wedge.
After that process I have no issues. These issues though not as urgent as the ones listed above, will be fixed soon.

After that process I have no issues. These issues though not as urgent as the ones listed above, will be fixed soon.

While these steps help mitigate the most severe problems, they represent a temporary workaround rather than a permanent solution. JBL assures us that comprehensive fixes for all reported issues are in development.

We’ll provide updates as soon as JBL releases a stable firmware version. For professional audio needs requiring immediate assistance, please contact your authorized JBL representative.