We recommend using the NativeDSD Downloader, available here. It will be an easier, smoother process instead of .zip downloads, which can get very large, and fail.
Unzipping on Windows
For windows user we recommend unzipping the package using a free app called 7 zip. It is available here: http://www.7-zip.org/.
Make sure you have plenty of available free space on the drive where the unpacked files will be saved to.
Unzipping on Mac
If you use a Mac, you will have more luck with decompressing using this free app rather than the Mac’s own Archive utility.
Make sure you have plenty of available free space on the drive where the unpacked files will be saved to.
For more information about zipping and unzipping on macs, read this article.