You must install the System Firmware (PSVUPDAT.PUP) before installing the Font Package. Installing fonts first can cause boot loops.

If you downloaded a .zip or .7z file containing loose font files (usually in .ttf or .pgf formats), you must place them in the correct system directory manually.

Hosted on third-party file-sharing sites that may contain malicious ads. Always scan downloaded .zip files with an antivirus tool before opening them. Step-by-Step Installation Guide

Some popular font packages for Vita3K include:

Some games crash when they attempt to load a font file that isn't found.

The PlayStation Vita operating system stores its fonts in a specific system directory. When a game requests a specific font style (like the rounded UI font used in system menus), it calls upon these system files. Vita3K creates a virtual environment that mimics the Vita hardware; if the font files are missing from the virtual "hard drive," the game has nothing to draw.

The most reliable method is to follow the Official Vita3K Quickstart Guide, which provides the latest firmware and font files. B. Reddit/Community Mirrors (When Official Links Fail)