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# MegaSquirt Firmware Install and Update

This Utility will install or update the firmware on your Genuine MegaSquirt Product.
Please step through this wizard reading instructions carefully.
Note: If your updating firmware on a device that has already been configured, it is recommended you do so while the project normally used is open. Having a project open will aid in restoring your Tune settings and updating your ECU Definition after the firmware has been updated.