| Feature | 6.60 PRO-C2 | 6.60 ME / LME-2.3 | | :--- | :--- | :--- | | | Developed by Coldbird and Virtuous Flame. | Developed by Japanese developer Neur0n. | | Key Strength | Known for its PRO Online client, which allows some ad-hoc PSP games to be played online via a PC server. | Often cited as being faster, more stable, and receiving more frequent updates. | | Permanence | For PSP-1000/2000, run the CIPL Flasher after installation. | Designed as a permanent flash for PSP-1000/2000; simply run the installer to permanently install. | | Community Focus | Had a larger international following and a focus on online multiplayer functionality. | Strong reputation for reliability, particularly in the Japanese and European communities. | | Recommendation | Great if : Ad-hoc to Wi-Fi multiplayer for specific games is a high priority. | Great if : Your main goal is maximum game/homebrew compatibility and overall system stability. |
Connect your PSP to the PC. Go to PSP -> GAME and create a new folder named UPDATE .
⚠️ If you have a PSP 2000 (TA-088v3 motherboard) or any PSP 3000/E1000, you cannot use the permanent CIPL patch. You’ll run PRO-C via Fast Recovery after each full shutdown. That’s normal.
Create a folder named ISO directly in the root of your Memory Stick (the very first screen when you open the drive on your PC). Drop your .ISO and .CSO game backups here. psp 352 m33 upgrade to 660 portable
Note: This guide assumes standard "Phat" (1000) or "Slim" (2000) models. If you have a PSP 3000 or PSP Go, the process requires a "Permanent Patch" tool that runs on every startup.
If you have a PSP 1000 or early 2000 (non-TA88v3), you can make the CFW permanent so it does not disappear when you turn the console off. Open the PROUPDATE folder again. Run the (included in the PRO-C2 download). Press X to flash the patch.
Because 3.52 M33 is so old, you cannot jump straight to 6.60. Doing so will brick your console. This comprehensive guide details the exact stepping-stone process required to safely modernize your PSP. Prerequisites and Requirements | Feature | 6
Updating your PSP from the classic, yet outdated, 3.52 M33 custom firmware to the modern 6.60 (or 6.61) Portable/Custom Firmware (CFW) is essential for accessing newer homebrew, plugins, and ensuring maximum game compatibility in 2026. This guide will walk you through the process, taking your console from a 2007-era firmware to the pinnacle of PSP hacking. Why Upgrade from 3.52 M33?
The 3.52 M33 firmware was a milestone in its day, developed by the legendary Dark_AleX as part of the M33 series. However, it's now significantly outdated. Upgrading to 6.60 opens up a world of possibilities, allowing you to play modern game backups that require newer firmware, access a vast library of the latest homebrew applications and emulators, and enjoy enhanced stability and features found in modern custom firmwares (CFWs).
: 6.60 is widely considered the most stable firmware for plugins and Custom Themes (CTFs), often preferred over 6.61 due to better plugin support. Upgrade Path & Common Obstacles | Often cited as being faster, more stable,
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Your PSP is now permanently modded on modern firmware. You can turn the system completely off, swap batteries, or drain the power without losing your jailbreak status. Optimizing Your New 6.60 Portable Environment
Connect your PSP to your PC via USB and open the Memory Stick files.