Just bought this. Have fun!
You can download the BMW folder from the link below, please copy and paste this into your browser url. Please disable smartscreen as on some browsers this is enable by default and will prevent you from downloading this file).
IMPORTANT: AS SOON AS YOU COPY AND PASTE THE FULL LINK (ends in 7.z INTO YOUR BROWSER URL YOU WILL BE PROMPTED WITH A DOWNLOAD OPTION. 95% of users just require ISTA+ for diagnostics if you require ISTA-P then this requires and additional 60Gb of Harddisk space but is only required for programming.
ISTA+ (ISTA-D) – BMW Diagnostics (20gb Download) – For Diagnostics on E-Series & Diagnostics and Programming on F Series
www.xpcc.co.uk/2111/ISTA_4.32.1.7z
ISTA-P – BMW Diagnostics (27Gb Download) – Optional – For Programming on E-Series
www.xpcc.co.uk/2111/BMW.7z
Upon downloading, use 7zip (download for free from:
http://www.7-zip.org/download.html) to extract the archive file and the remaining files will unzip automatically for each of the three downloads. Once download and extracted read the installation instructions with the .pdf file contained and follow it through step by step.