Psp 352 M33 Upgrade To 660 〈2025-2026〉

from the vintage custom firmware to the modern 6.60 standard, you need to follow a specific two-step path. Because 3.52 M33 is so old, modern 6.60 installers often cannot recognize it directly.

Cause: You tried to update from 3.52 M33 directly to 6.60. Fix: Go back to Step 2. You must use Hellcat’s Recovery Flasher to go to 5.00 M33-6 first. psp 352 m33 upgrade to 660

Rationale: 5.00 M33-6 includes the version.txt spoofing required to bypass Sony’s 6.xx battery check. from the vintage custom firmware to the modern 6

If the update fails with an error or claims your version is "9.90," follow these fixes: Version Spoof Fix Fix: Go back to Step 2

You might ask: “Why 6.60 and not 6.61?” The answer is . 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.

Updating directly from such an old version sometimes triggers errors like "9.90" or "DADADADA" because of the version spoofing in old M33 firmwares. Download the 6.60 OFW : Obtain the from a reliable source like the ConsoleMods Wiki : Connect your PSP to a PC via USB. Create a folder named /PSP/GAME/ on your memory stick. : Copy the into that folder so the path is ms0:/PSP/GAME/UPDATE/EBOOT.PBP Run Update : On your PSP, navigate to Game > Memory Stick and launch the 6.60 Update If you see a "9.90" error: Recovery Menu Advanced > vshmenu , and set "USB Device" to "Flash 0". Connect to a PC, open vsh/etc/version.txt , and change "release:9.90:" to "release:3.52:". 3. Install Modern Custom Firmware (Optional) Once on 6.60 OFW, you can install 6.60 PRO-C2 for homebrew and ISO support. PSP: Updating from the 3.xx OE CFWs to the 6.60 ME CFW