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Knowledge baseQuad Cortex updatesCorOS 1.3.1 is now available
February 3, 2022

CorOS 1.3.1 is now available

CorOS 1.3.1 is now available. Download it via Settings > Device Options > Device Updates on your Quad Cortex once connected to Wi-Fi. We recommend that you create a backup before updating your firmware.



  • An issue in which a crash occurs when entering the I/O Settings menu.

  • An issue in which the output signal is muted after 1 minute if a Plate Reverb’s Mod Depth parameter is set to 100%.

  • An issue in which the UI freezes after moving or deleting a bypassed block that has the bypass parameter assigned to an expression pedal.