Since these are hosted on third-party file-sharing sites (like Mediafire or Mega), they are not vetted by EA Sports. Always scan .rar files with updated antivirus software before extracting.
You only need to right-click and extract Part 1 using a tool like WinRAR or 7-Zip ; the software will automatically pull data from the other parts to recreate the full installer. Safety and Stability Warnings
These patches typically include full transfers, new wonderkids, and sometimes national teams that were removed from official releases. Critical Installation Note