Originally Posted by
blindsquirrel
Making changes to the tune file only changes the CVN for the segment that contains the bits you changed.
Try this: Take a file and change just one something in one of the tabs and save as a new file. Then compare Details of the new file with old file. One of the segments will show a different CVN, the one that's different is the one that contains the setting you changed. The CVN for the other segments will still be the same because nothing was changed in them. CalIDs/CVNs are nothing to do with the counter that shows if/how many times it's been flashed.