i dont' want to be a jackass, but if i call my sort of local APR dealer and mention to them about this "magic" stage 1 update file, will they know what i'm talking about?? do they already have it and ready to be flashed to people like ME that what it having done??
I guess you haven't followed the thread.
Some will know about the file and some won't.
And no dealer will have it yet. In fact the don't 'get' it. They log into APR and download it at the time of your appointment.