Psp 352 M33 Upgrade To 660 [upd] -

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

Introduction: Why Upgrade?

If you are still running Custom Firmware (CFW) 3.52 M33 on your PlayStation Portable (PSP), you are sitting on a relic of hacking history. Released back in 2007 by the legendary team M33, this firmware was revolutionary for its time. However, in the modern era, sticking with 3.52 M33 is like using a flip phone in the age of smartphones.

Upgrading to 6.60 PRO-C (or the more recent 6.61 Infinity) opens up a world of compatibility, stability, and features. Here is why you need to make the jump: psp 352 m33 upgrade to 660

• Game Compatibility: Modern homebrew, emulators (like Daedalus X64 for N64), and recent game backups require firmware 5.00 or higher.
• PSN Access: While PSN store is closed for PSP, higher firmware allows better network compatibility for ad-hoc play.
• No more 1.50 Kernel add-ons: 3.52 M33 relied on a 1.50 kernel add-on for legacy homebrew. 6.60 PRO-C handles everything natively.
• Infinity Permanence: You can make the hack permanent without the "brick risk" of older firmware.

Warning: Read before proceeding. Upgrading from such an old firmware is not as simple as dragging a file to your memory stick. If you skip steps, you will encounter the dreaded "The system configuration of this PSP system does not appear to be correct" (Error DRNFFFFFFCD) or a straight-up brick.

Step 3: Install Official 6.60 Firmware

⚠️ Important: On CFW 3.52 M33, you must first disable any “Hide MAC” or kernel plugins, or use Hellcat’s Recovery Flasher to go to 5.00 M33-6 first. But normally you can run the Sony updater directly from XMB. The Ultimate Guide: Upgrading Your PSP from 3

1. On PSP, go to Game → Memory Stick™ → Update 6.60 (Sony icon).
2. Run it. Accept warnings. Do not turn off power during update.
3. After update, your PSP will restart on Official Firmware 6.60 (no custom firmware).

8. Performance Benchmark (Unofficial)

Tested on PSP-2000 (Slim), Memory Stick Pro Duo 8GB (Sony).

| Operation | 5.50 PROM-4 | 6.60 PRO-C2 | |-----------|-------------|-------------| | XMB boot time (cold) | 8.2 sec | 7.5 sec | | ISO load (GTA: VCS) | 14 sec | 11 sec | | PS1 emu (FFVII) | 60 FPS (drops) | 60 FPS (stable) | | Homebrew mem alloc | 24 MB max | 32 MB max (ME) | Warning: Read before proceeding

Part 6: Why Not Go Directly to 6.61?

You might ask: “Why 6.60 and not 6.61?” The answer is compatibility. While 6.61 is newer, 99.9% of homebrew, plugins, and cheats are developed for 6.60. PRO-C2 for 6.61 exists, but many tools (including Chronoswitch and some version spoofers) work better on 6.60. Unless you need to play a specific game that requires 6.61 (extremely rare), stick with 6.60.

Emergency Recovery (Bricked PSP)

• PSP-1000/2000 non-v3 – Pandora battery + Magic Memory Stick.
• PSP-3000/Go/E1000 – Use Chronoswitch Downgrader v7.0 from recovery menu (hold R on boot).

5.2 Memory Map Changes (PSP-1000)

• 5.50 M33: User memory = 24 MB (with 8 MB reserved for kernel).
• 6.60 ME: User memory = 32 MB via “Memory Extension” mode (steals from Media Engine).

The Route: Which 6.60 Should You Choose?

When upgrading, you generally have two options. The "M33" lineage effectively ended years ago, so you will be moving to a different custom firmware architecture.

My PSP turns off immediately after running the 6.60 updater.

Cause: Kernel conflict or low battery. Fix: Ensure your battery is 100% charged. If still failing, format the Memory Stick and run Hellcat’s Flasher again to go to 5.00 M33.