Home >> How to Upgrade from FW 1.50 to 3.52M33

The following is a three step guide to updrading your PSP firmware from version 1.50 to 3.52M33

Before you start, make sure you have downloaded the file(s) below:
PSP Downgrader/Upgrader



Step 1
-Connect your PSP to your computer and open PSP Upgrader

Step 2
-select 1.50 for current firmware, and 3.52M33 for target firmware
-click Yes when confirmation box appears
....wait for program to download the eboots...

Step 3
-Go to the GAME section of your PSP. Select Memory Stick and hit X on KXploit Permanent Patcher.
-Then press X on 3.52M33 CREATOR. After that, start 3.52M33Update.
-Finally, start M33 Update.


Enjoy 3.52M33 Custom Firmware!