Psp 352 M33 Upgrade To 660 Portable Guide
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Before diving into the "how," it is important to understand the "why."
You cannot directly jump from 3.52 M33 to 6.60 PRO-C. You must first revert to Official 6.60 firmware. psp 352 m33 upgrade to 660 portable
Option A (Recommended): Use Hellcat’s Recovery Flasher Before diving into the "how," it is important
Congratulations! Your PSP is now a clean, stock 6.60. You cannot directly jump from 3
After the reboot, go to Settings > System Settings > System Information. You should see:
That is the "Portable" suffix in your keyword—modern custom firmware that is fully portable across all PSP models.
Before jumping to 6.60, it is often safer to update your current M33 firmware to version 4 to patch the flash writing capabilities.