The Legend of Heroes: Trails in the Sky SC on PSP is a digital download or physical UMD. Ensure your PSP system is updated to the latest firmware for optimal performance and compatibility. If you have a digital copy, it will be installed directly to your Memory Stick Duo. For physical copies, simply insert the UMD into your PSP's UMD drive. The game will typically auto-launch or can be selected from the PSP's game menu.
Ensure you have sufficient free space on your Memory Stick Duo for save data. While the game itself doesn't require installation in the traditional sense for UMDs, save files can accumulate over time. Regularly backing up your save data to a computer or another Memory Stick is highly recommended to prevent data loss.
If you encounter issues, try restarting your PSP. For digital downloads, verify the integrity of the download through the PlayStation Store if possible. If using a physical UMD, ensure the disc is clean and free of scratches. In rare cases, re-downloading the game or cleaning the UMD drive might resolve persistent problems.