Back to stock but crc mismatch error 2010 camaro

Ok I backed up all my tunes I had custom made including my stock tune. I had a supercharger and a custom tune made but now I have gone back to stock and I can't load my stock tune. I get a crc mismatch error on my predator. How do I go about loading my stock tune in and get rid of the supercharger tune currently in car? I'm running the latest software.

[mikel]

Try deleting the custom tune from the tool, then try restoring.

Tried that but as soon as it tries to pull the tune from the car I get a crc mismatch error.

[mikel]

what do you mean 'pull the tune from the car'?
I thought you were trying to restore the tune from the tool to the PCM?

As soon as I plug predator in and navigate to the performance menu to select the tune I need, the predator say reading and the hour glass will be on for a min than it says crc mismatch tool. Please use options to delete custom tune and try again.

[mikel]

so, have you deleted the custom tune?

Thanks for the help but decided to go back to shop where my supercharger was installed. No need for the predator anymore.