The file name itself—ending in .part1.rar —tells a story of the digital distribution landscape in 2018. Before the ubiquity of ultra-high-speed fiber and massive cloud storage, large game updates (often several gigabytes) were frequently split into smaller "parts."
Released in late April 2018, Data Pack 4.0 was the final major update for PES 2018 . The specific version mentioned in your file name indicates a minor revision (4.01) designed to refine the massive overhaul that preceded it. This update was pivotal because it served as the bridge between the standard season and the 2018 FIFA World Cup era, bringing: PES2018v1.0.5.02.Data Pack4.01.part1.rar
: While "Data Packs" are often seen as cosmetic, they frequently included subtle adjustments to player AI and ball physics that defined the "final feel" of the game. The Anatomy of the RAR Archive The file name itself—ending in