WEHK released a video tutorial, explaining how to install their PES 2017 PS4 OF. Step 1: Prepare a USB memory stick formatted in FAT32 or exFAT (as NTFS is not supported by PS4). Then check the video. You can check also their ps4 importing guide, here.
Here is the OF: PES 2017 PS4 All In One USB Pack v0.1 by WEHK Team