Place the "Boot Pack V3.cpk" in the PES2019 download folder "C:\Program Files (x86)\Steam\steamapps\common\PRO EVOLUTION SOCCER 2019\download" & add to DpFileList.bin with DpFileList Generator 2019 v1.1 by @Baris.

NOTE: this is an AIO version..please remove any other boot packs to use this or you will have conflicts & it won't work correctly.