If you have a VPK file (whether homebrew or a game backup), here is the standard installation process:
This guide covers everything you need to know about downloading and installing PS Vita games in VPK format, while keeping your device safe and functional. What is a VPK File? ps vita games download vpk
Guide to PS Vita VPK Games: Downloads, Installation, and Alternatives VPK (Vita Package) If you have a VPK file (whether homebrew