Solution: PES 2015 PS4 supported 1024x512 resolution images. Do not use 2048x2048 images. Resize your PNGs using a tool like Paint.NET to the exact spec.
For PES 2015 on PS4, the community (notably on sites like PES Patch and PES World) provided "Kit Packs." These were not automated files but high-quality PNG exports of the kits, emblems, and manager images. pes 2015 ps4 option file
Even years later, the community hasn’t forgotten PES 2015. Look for: Solution: PES 2015 PS4 supported 1024x512 resolution images
Note: Unlike later PES games, PES 2015 didn’t support live squad updates after importing. You had to manually adjust transfers or find a file updated post-deadline day. Note: Unlike later PES games, PES 2015 didn’t