Boots Pack Vol. 14 For PES 17 PC by LPE 09
– Extract the archive with 7zip and copy .cpk file to:
C:\Program Files (x86)\Steam\Steamapps\Common\Pro Evolution Soccer 2017\download\
– Open and select DLC in DpFileList Generator
– Add .cpk as last checked, generate new DpFileList and enjoy your game!
Credits: LPE / LATINPESEDIT.