Are Games Compatible with PSP Firmware 5.51? Mostly Pre-2010 Titles

Firmware 5.51 (2009) is very old. Most games released after ~2010 require 6.00+.

Compatibility Reality

• Launch–2009 games: Likely work.
• 2010+ games: Often require 6.20, 6.30, 6.60, 6.61.
• PSN/Store titles: Require 6.60+ for DRM.

Options

1. Update to 6.61 (latest official): Settings → System Update. Best compatibility, security.
2. Custom Firmware (CFW): 6.61 PRO-C2 / ME-2.3 / Infinity. Enables homebrew, ISO loading, plugins. Research thoroughly—brick risk.
3. Stick to 5.51: Only play pre-2010 UMDs. No PSN, no new games.

Check Specific Games

Search "[Game] PSP firmware requirement" or check PSPEmu compatibility lists.

Updating to 6.61 is safe, free, and recommended for 99% of users.