Originally Posted by NJBlackBerry
Removing Vendor.XML simply allows you to load an OS that was not branded for the original vendor of your BlackBerry. It doesn't install a "Clean OS".
Agreed, if this were to work there is another file you have to edit by removing all the vendor codes. I can't remember which file but I know in the old days we did it to get all the themes...
However, this sounds like a carrier and not a device limitation...