The official documentation is partly wrong, it is distributed in different documents or across the Internet and a lot is missing. For Edison specific Linux features there is almost nothing. Some instructions e.g.: how to VFAT format the update partition on a Mac are too complicated if you can do the same job just with a single line cmd in the console. That's why I turned my own notes into our company Wiki which is exported and published now.
Thanks from the warm feedback, it helps, because it was quite some work to complete it and bring it in this format.