Running Bully: Anniversary Edition on a PlayStation Vita requires a specific set of data files sourced from the Android version of the game. Because the PS Vita version is an unofficial fan-made port, it does not come with the copyrighted game assets. Users must provide these themselves to make the game playable. Required Data Files
Unlike a standard ROM or an ISO file, Bully does not run natively on the Vita via a single cartridge dump. Instead, the homebrew community developed a wrapper or an engine port (often referred to as the Bully Android Port or GTK-based launcher) that requires the original asset files from a legitimate copy of the game. bully data files ps vita
If you cannot get the Android data files working, there is a legacy method. Running Bully: Anniversary Edition on a PlayStation Vita
Keep in mind that modifying or tampering with game data files can potentially damage the game or lead to stability issues. Required Data Files Part 1: What Are "Bully Data Files"
Memory Management: The game does not naturally free unused textures, which can lead to crashes after long sessions. It is recommended to save often and restart the game if you notice performance dipping.