Seems your wasting a lot of time changing your MAC address, if your determined to change it, why not use SEN Enabler? Here, this video is a bit outdated, but you'll get the gist of what I mean, and this all should be possible with newer versions of SEN Enabler as well. I haven't tried it myself, so proceed with caution and do your research before you make any big changes. So no more reformatting is needed lol