Once your PSP reboots into 6.60 PRO or ME:
A Pro Duo stick or a MicroSD to Pro Duo adapter with at least 64MB of free space. Mini-USB Cable: To transfer files from your PC. 2. Step 1: Cleaning Up 3.52 M33
On your PSP, go to the Game menu and run the PSP Update Ver 6.60 . Follow the on-screen instructions to update. psp 352 m33 upgrade to 660 portable
Because 3.52 M33 is so old, you cannot jump directly to 6.60. Doing so often results in a "DADADADA" error or a brick.
This comprehensive guide covers everything you need to safely bridge this massive firmware gap. Why Upgrade from 3.52 M33 to 6.60? Once your PSP reboots into 6
Upgrading from the legacy custom firmware (CFW) to the modern
While the store is mostly defunct, 6.60 allows better connectivity for local multiplayer and PS1 classics. Step 1: Cleaning Up 3
Your current 3.52 M33 firmware cannot directly install newer official updates. You must first update it to the revision. This is a necessary safety measure; skipping this patch could cause the update to fail. The update is cumulative, meaning you can go directly from 3.52 M33 to 3.52 M33-4.
Safely disconnect the USB, go to , and launch the 5.00 M33 update.