Press to flash the custom firmware. The process takes less than five seconds.
The installer will flash the custom elements directly to your PSP's internal memory chips.
Go to Settings > System Settings > Format Memory Stick . (Warning: This deletes everything on your card!) USB Connection: Connect your PSP to your PC using USB. Phase 2: Upgrading to Official Firmware 6.60 psp 352 m33 upgrade to 660
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You cannot update straight to 6.60 because your 3.52 M33 firmware reports a spoofed version number to the updater, or the system lacks intermediate keys. The safest, tested upgrade path is: Press to flash the custom firmware
Put the Chronoswitch files into ms0:/PSP/GAME/CHRONOSWITCH/ . 🔄 Step 2: Flash Back to Official Firmware (OFW) 6.60
Step 4: Installing Modern Custom Firmware (6.60 PRO-C or ME) Go to Settings > System Settings > Format Memory Stick
Your PSP is now on modern CFW, but your old data needs attention.
The baseline 3.52 M33 firmware cannot execute newer execution scripts. You must first apply the absolute final revision of the 3.52 sequence, which is .