can you reflash to stock and sart over

Can I reflash a 2010 camaro back to stock from gm and start from scratch with HP tuner?

One of the first steps in our reflashing process is to download and save the stock rom file for this exact reason - You can always revert to the stock calibration at nay point if something gets messed up in your tune file. If you haven't saved the stock rom file this can be a little more difficult as you'll need to find a suitable file first.

The HP Tuners website has a great tune repository for account holders which have plenty of both base maps and tuned maps people have uploaded. I have used this several times to get stock maps for vehicles which have been tuned elsewhere and I want to start from the beginning.