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Knowledge baseQuad Cortex updatesCorOS 2.0.3 is now available
May 10, 2023

CorOS 2.0.3 is now available

CorOS 2.0.3 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.

This is a high priority security update and we recommend you update as soon as possible. If you haven't already, please read our recent statement regarding a security vulnerability found on Quad Cortex.


  • Preset names disappearing after renaming a Preset within the Directory or Grid View Edit Details menu.

  • Impulse Response name change not taking effect after tapping the blue diskette button within the Impulse Response Edit Details menu.

  • An issue where changes made to a Preset were not saved via the Edit Details menu while the Preset was in a dirty state.