If a VPK fails to install with this error, the issue is typically a missing param.sfo file, which is required for PS Vita applications. Ensure the VPK contains this file in the correct location.
Suddenly, "VPK" stood for two things to hackers: vpk files for ps vita
For those comfortable with command-line utilities, the process is direct. VPK files can be installed from the command line utility VPK.exe. On Windows OS, files can be dropped on vpk.exe file which returns a *.vpk containing all the packaged files. The command line tool can be used as follows: If a VPK fails to install with this
An "App Store" for your Vita so you can download other VPKs directly on the device. VPK files can be installed from the command line utility VPK
A reliable storage solution, preferably an SD2Vita adapter paired with a high-capacity MicroSD card, as homebrew games and ports can quickly consume space. How to Install VPK Files on PS Vita
Here is everything you need to know about VPK files, from what they are to how you can safely install them on your PlayStation Vita. What is a VPK File?