Spark Firmware Release Notes

*For firmware update tutorial, please refer to How to Update Spark Firmware (Video Tutorial).


July 26. 2021

Spark firmware

  • Amps:
    • ODS 50 - Inspired by the Dumble ODS 50
    • Blues Boy - Inspired by the Fender® Blues Junior™
    • Insane 6508 - Inspired by the Peavey 6505®
  • Effects:
    • Clone Drive - Inspired by the Klon Centaur
    • Guitar EQ
    • Bass EQ
  • Other Fixes and Improvements:
    • Spark Tone Control connection speed has been optimized
    • Additional minor bug fixes and improvements
  • Known Issues
    • Downgrading your firmware to an older version while Spark has a hardware preset slot with the newly released amp and effects in firmware will cause Spark’s firmware to crash. Please do not downgrade your firmware if you’ve update to the latest version!

*Other product names mentioned in this page are trademarks of their respective companies that are not endorsed, associated, or affiliated with Positive Grid. Dumble, Fender, Peavey, and Klon are trademarks or trade names of other manufacturers and were used merely to identify products. All other trademarks are the property of their respective holders.


June 12. 2020

Spark firmware

  • Fixed the random loud noise when switching presets via Spark app
  • Improved Bluetooth connection stability
  • Exiting Tuner mode now only requires short tap on any of the 5 buttons (for units shipped with firmware version
  • Increased USB recording volume (for units shipped with firmware version
  • Various bug fixes
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