Generac Generator USB Updater for Evolution, Evolution 2.0, Synergy - Generac, Honeywell.  LATEST UPDATES for 2025!

Pre-loaded USB with firmware updates for:
  • Generac generators with Evolution, Evolution 2.0 controllers - Guardian Models, Synergy, Ecogen, and liquid-cooled Protector models and XG models / RA models
  • Honeywell generators with Sync 2.0 and Sync 3.0 controllers.  Honeywell liquid cooled models with Evolution controllers
USB Firmware Updater includes instructions for easy updating.  Updating firmware on your generator will add all of the latest features, and often includes bug fixes and performance improvements

the firmware versions included with this installer are the latest versions available from the manufacturer with USB pre-formatted and the files already installed and ready to use.
  • 1.22 for Generac Evolution 1.0/Honeywell Sync 2.0
  • 1.18 for Generac Evolution 2.0/Honeywell Sync 3.0 
  • 1.15 for Synergy and Ecogen VSCF models
  • 1.54 for Protector series / liquid cooled * NEW *
  • 1.13 for Protector ECM series - includes ECM firmware 298 all versions including XG models * NEW *
  • 1.14 for Powerzone 410 controllers * NEW *
Also includes a file with list of historical bugfixes & improvements for most controllers.

Printed instructions include both the standard FW update process as well as the "emergency" method which can sometimes recover a non-responsive controller.

USB comes in various colors.