Psp 352 M33 Upgrade To 660 -

The Ultimate Guide: Upgrading Your PSP from 3.52 M33 to 6.60 PRO-C

Introduction: Why Upgrade?

1. Run KeyCleaner (Critical if you have a PSP-1000 or early 2000)

Old M33 versions sometimes corrupted the IDStorage keys. Symptoms include broken WiFi, no MAC address, or inability to run PSN games. psp 352 m33 upgrade to 660

Memory Stick: Use a reliable, formatted Pro Duo stick or a high-quality microSD adapter . The Ultimate Guide: Upgrading Your PSP from 3

Step 1: Update to OFW 5.00 (Intermediate Step)

Some PSPs on very old M33 versions (below 4.01) have been known to brick when jumping directly to 6.60. To be hyper-safe, first update to 5.00 OFW. Download 660

Appendix A: File Checksums (SHA-1)

Test: Go to Settings → System Settings → System Information. It should read “System Software: Version 6.60”.

1. Download 660.PBP → Place in ms0:/PSP/GAME/UPDATE/ → Rename to EBOOT.PBP.
2. Run “Update” from XMB (Game → Memory Stick).
3. Confirm system software: “6.60” (Sony official).
   Note: This removes CFW but preserves homebrew capability via later reinstallation.