Brand:

• Soundcraft

Affected Products:

• Ui24R Digital Mixer

Summary:

• When updating certain legacy Soundcraft Ui24R consoles to firmware v3.4, the unit may fail to complete boot initialization and enter a continuous boot loop, indicated by permanently pulsing Master LEDs.  Installing Firmware v3.5 (or higher) resolves compatibility issues on legacy ARM processor hardware revisions.

Troubleshooting:

• End-User Action:

1. Download the latest official firmware update (Ui24R Firmware v3.5 or higher) directly from the Soundcraft website or Help Center.
2. If an affected console is currently stuck in a boot loop on v3.4, perform a Full Reset / Factory Recovery procedure using an external USB drive loaded with stable firmware (v3.3 or v3.5+).
3. Re-apply the update to bring the console to v3.5+.
    

• Workarounds:
  Factory Full Reset Procedure: Execute a full hardware reset using the physical reset pinhole and a FAT32-formatted USB flash drive loaded with working firmware (e.g., v3.3 or v3.5+) to recover stuck units.
   
• Resolution: 
  Update console firmware to version v3.5 or higher.
   
• Verification:
  Power cycle the unit following the v3.5 update and verify that the console boots normally into the standard operating UI without LED pulsing.