Psp 352 M33 Upgrade To 660 Portable ((full))

The Ultimate Guide: How to Upgrade Your PSP from 3.52 M33 to 6.60 Portable CFW

How I Upgraded a PSP 352 M33 to a 6.60 PRO or Rebirth-Style Portable: A Step‑by‑Step Guide and Notes

The safest path is to return to an official Sony firmware (OFW) first, then bridge to 6.60. Phase 1: Preparing for the Jump Charge Your Battery : Ensure it is at

Upgrading Your PSP 352 to M33 6.60 Portable: A Step-by-Step Guide

That is the "Portable" suffix in your keyword—modern custom firmware that is fully portable across all PSP models. psp 352 m33 upgrade to 660 portable

Conclusion

• produce step-by-step model-specific install instructions, or
• write a short hands‑on review in first person with ratings (stability, compatibility, features, ease-of-install).

Step 2: Update to Official 6.60 (The “Unbrick” Method)

Once you have flashed the system to 6.60 (official or temporary custom firmware), you need to install the permanent custom firmware. The Ultimate Guide: How to Upgrade Your PSP from 3