Psp 352 M33 Upgrade To 660 ((exclusive)) -

Ensure your PSP has at least 75% battery or is connected to the charger. Backup Data: Copy your memory stick data to your PC.

A reliable Memory Stick Pro Duo (or a MicroSD to MS Pro Duo adapter) formatted by the PSP. psp 352 m33 upgrade to 660

On your PSP, navigate to Settings > USB Connection and ensure it's set to USB Mode . Ensure your PSP has at least 75% battery

Older custom firmwares sometimes conflict with modern updates. We need to clean up the system before installing the official firmware. On your PSP, navigate to Settings > USB

After installing 6.60 PRO-C, your CFW is —it will revert to OFW after a full shutdown. To make it permanent, follow these steps:

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.