[GUIDE] Upgrading 1.50/OE to 3.71 M33-4 w/ 1.50 kernel
IntroductionInstalling 3.71M33-4 w/ 1.50 kernel add-on involves lots of steps. I'll try to guide you through every single step, make sure you download all files in the requirements section :) The steps 1 and 3 are written by Moose_Island, and are here with his permission :)
RequirementsYou need a 1.50/OE PSP and all of the following files:3.52 M33 Installation Files3.52 M33-4 Installation Files3.71 M33 Installation Files3.71 M33-4 Installation Files3.71 M33 1.50 Kernel Add-on v21.50 Update File3.52 Update File3.71 Update File
Step 1: Installing 3.52 M33Make sure you have the 3.52 M33 Installation Files, 1.50 UPDATE file and the 3.52 UPDATE file ready.[Skip this if you are on OE] Copy the folders 'kxploitpatcher and kxploitpatcher%' to the directory; 'X:/PSP/GAME/' on your PSP's memory stick.Copy the folder 'M33CREATOR' to the directory; 'X:/PSP/GAME/' (or GAME150 on OE) on your PSP's memory stick.[Skip this if you are on OE] Run the kxploitpatcher program.Rename the 3.52 update you downloaded to 352.PBP.Copy the 352.PBP to the directory; 'X:/PSP/GAME/M33CREATOR/' (or GAME150 on OE) on your PSP's memory stick.Rename the 1.50 update you downloaded to 150.PBP.Copy the 150.PBP to the directory; 'X:/PSP/GAME/M33CREATOR/' (or GAME150 on OE) on your PSP's memory stick.Execute '3.52 M33 CREATOR' under GAME on your PSP.Then execute '3.52 M33UPDATE' under GAME on your PSP.Once finished, press X.
Step 2: Installing 3.52 M33-4Make sure you have the 3.52 M33-4 installation files ready, the password is:
Copy the 'M33Update4' folder to 'X:/PSP/GAME150'.Execute the file showing '3:33:33 - March 33' on your PSP.Read and agree with the license, then press X to flash the update.
Step 3: Installing 3.71 M33Make sure you have the 3.71 M33 Installation Files and the 3.71 UPDATE file ready.Turn your PSP off completely.Turn your PSP on holding the R button.Go to Configuration, and set 'Game folder homebrew' to 3.52.Restart your PSP.Extract the RAR file named release.Place the folder named 'UPDATE' in the following directory: 'X:/PSP/GAME/'Rename the 3.71 UPDATE file to '371.PBP'.Place the 3.71.PBP file in: 'X:/PSP/GAME/UPDATE/'.In the PSP's main menu, go to GAME > Memory Stick.Run the update. Press X, and once you have completed the verification steps, the updater will start.
- If your idstorage is corrupt in any way, the installer will ask you to allow it to correct it before the installation continues.Sit back and watch the official Sony updater install a custom firmware!Once the Sony code finishes the installation of 3.71, it'll say 'Press X to reboot' you must press X, or you will brick (so don't turn it off, press X)Once done, remove the UPDATE folder from the memorystick.
Step 4: Installing 3.71 M33-4Make sure you have the 3.71 M33-4 installation files ready.Extract the 'UPDATE' folder from the ZIP to 'X:/PSP/GAME'.Go to GAME > Memory Stick on your PSP.Run the update and follow the on-screen instructions.Once done, remove the UPDATE folder from the memorystick.
Step 5: Installing 1.50 kernel add-onMake sure you have the 1.50 Kernel Add-on Installation Files and the 1.50 UPDATE file ready.Extract the 'UPDATE' folder from the RAR you downloaded into 'X:/PSP/GAME'.Copy the 1.50 UPDATE file to the root of your memorystick.Rename it to '150.PBP'.On your PSP, go to PSP > Game and run the update.Follow the on-screen instructions.
Note: You can remove all of the files you used in this guide after finishing it :)
Enjoy 3.71 M33-4 with 1.50 kernel add-on!