Disconnect from the PC. On your PSP XMB, go to . Launch the PSP™ Update ver 6.60 .

If you have a or an early PSP-2000 (non-v3) , you can make the firmware permanent later.

To install 5.00 M33-6:

If your PSP is a PSP-2000 (TA-088v3 motherboard) or a PSP-3000 , you must never fully shut down the device after installing 6.60 PRO-C (unless you install permanent patches like Infinity). For now, follow this guide to get a temporary but fully functional custom firmware.