Ensure the file ends in .PUP . If it ends in .txt or .zip , rename it or re-download.
To successfully set up , the first functional PlayStation Vita emulator for Windows, macOS, Linux, and Android, you must install both the PS Vita system firmware and the Firmware Font Package . These files allow the emulator to low-level emulate system modules and correctly render UI text in games. Where to Download Vita3K Firmware and Fonts vita3k firmware font package download
After the files are installed, finish the setup by creating a User Profile Vita3K Setup Guide: How to Download and Install
If you have a hacked PS Vita (Enso or HENkaku): Test a Game: Launch a game