Q: Can I go from 3.52 M33 straight to 6.61? A: Yes, but 6.61 offers very few advantages over 6.60 and has worse plugin support. Stick with 6.60.
Q: Will my old 1.50 kernel homebrew still work? A: Some very old homebrew (2005-2006) may not run. However, modern alternatives exist for nearly everything. For legacy apps, use eLoader or LEDA plugin.
Q: Is it safe to play online? A: Yes. PRO-C spoofs your version to appear as OFW. However, official PSP online services (Infrastructure) are mostly shut down. Use community servers like Pro Online or Xlink Kai for ad-hoc play over the internet.
Q: My PSP is a “T.A. 082” board with 3.52 M33 – any risk? A: No. TA-082 boards were problematic for downgrading, but upgrading is fine. The 6.60 official update includes full motherboard compatibility. psp 352 m33 upgrade to 660 portable
Important Note Before You Start:
If your PSP is a PSP-2000 (TA-088v3 motherboard) or a PSP-3000, you must never fully shut down the device after installing 6.60 PRO-C (unless you install permanent patches like Infinity). For now, follow this guide to get a temporary but fully functional custom firmware.
If you have a PSP-1000 or an early PSP-2000 (non-v3), you can make the firmware permanent later.
If you own a PSP 1000/2000/3000 with a custom firmware (CFW) like the M33 series and want a modern, portable-feeling experience by moving up to a 6.60-based release (6.60 PRO/PRO-C or similar), this post walks through the motivation, what to expect, and a practical, low-risk path. This is written for hobbyists who want a cleaner, more compatible firmware experience while keeping their PSP fully functional for games, homebrew, and media. Q: Can I go from 3
Now we turn that official firmware into a permanent custom firmware.
If you have dusted off your old PlayStation Portable (PSP) and found it running Custom Firmware 3.52 M33, you are holding a piece of history. Released back in 2007 by the legendary team M33, this firmware was revolutionary. However, in 2025, 3.52 M33 is ancient. Modern games require firmware 6.60 or 6.61, and many homebrew apps simply crash on the old kernel.
Upgrading from 3.52 M33 to 6.60 Portable (PRO or LME) is the single best performance and compatibility upgrade you can perform. But there is a catch: you cannot simply drop the update files onto your memory stick and run them. Sony’s official updates will fail because the 3.52 M33 NAND structure differs from later official versions. Important Note Before You Start: If your PSP
This guide will walk you through a safe, step-by-step process to transform your obsolete 3.52 M33 PSP into a modern 6.60 Portable machine.
"I get a black screen after running PRO Update!"
"I want to go back to 3.52 M33!"
"My PSN games won't run."
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