Now we'll execute the upgrade in three phases.
The PSP will guide you through the update process. Ensure you do not interrupt the process. Once the update is complete, your PSP will restart.
Now that your PSP is running a modern M33 kernel, it can seamlessly process Sony's final major retail updates. psp 352 m33 upgrade to 660
standard is a classic "bridge" update. Because 3.52 M33 is over a decade old, you cannot jump directly to 6.60; you must follow a specific sequence to avoid bricking your console. Update Roadmap
3.52 M33 was permanent, but modern CFWs (PRO-C2) are "light" (temporary) by default. You need the to ensure your PSP stays on 6.60 after a shutdown. Now we'll execute the upgrade in three phases
They called the upgrade "660" because people like neat numbers. In truth it was a set of wishes: cleaner clock, sharper textures, a softer hum when the UMD cradle closed. M33 had stitched itself to firmware like a seamstress to a coat — clever shortcuts, borrowed gestures from brighter devices, an empathy for games that wanted to run without asking for permission.
While Team M33’s 3.52 release was a groundbreaking achievement in the mid-2000s, it lacks critical architecture needed for later software. Upgrading to 6.60 or 6.61 provides immediate benefits: Once the update is complete, your PSP will restart
| 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) |
While 3.52 M33 was a stable, iconic release, it has severe limitations compared to 6.60/6.61:
: This acts as a critical bridge between the older 3.xx kernel and newer versions. 3.71 M33 to 6.60 Official Firmware (OFW) : Install Sony's official 6.60 update to clean the system. 6.60 OFW to 6.60 Custom Firmware (CFW) : Re-jailbreak using modern tools like 6.60 PRO-C2 6.60 ME-2.3 Why Make the Jump?
A: No, firmware updates preserve savedata stored on the Memory Stick. However, you should still back them up before starting.