Old tuner broke before returning truck to stock

I purchased a new i3 to replace my original inTune that broke, but I did not get to return my vehicle to stock before. So now when I try to put a tune on with my i3, it tells me that my truck was previously tuned with a Diablo product and must returned to stock before I can tune it. Is there a way to overwrite this, or to return my truck to stock without the original tuner?

[mikel]

what vehicle is it?

It's a 2010 Silverado 1500 with the 5.3L

[mikel]

post the file it read out here and i will get it back to stock.
Its in the tunes folder on the i3 drive.

ECM_12650874_BackupDiabloTune.grg

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Here is the backup file from my "tunes" folder

[mikel]

LuketheWeaver wrote:

The attachment ECM_12650874_BackupDiabloTune.grg is no longer available

Here is the backup file from my "tunes" folder

save this to the i2 drive and let the device import it then load it to the truck to set the pcm back to stock.