Originally posted by cee43ja1:

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there's nothing wrong with 3.52 m33. i'm running it, and have no problems. if you want a fail safe, create a pandora's battery/magic memory card. if you brick, you'll be able to go back to 1.5.
but if you follow larrylje's miniguide on 3.52 m33-4, you will not brick.

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Originally posted by larrylje:

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Make sure you update to 3.52 M33 first before updating with the M33-4 update.

Below are the files you will need.

3.52 M33 HERE

3.52 M33-4 HERE

3.52 firmware HERE

1.50 firmware HERE

You can upgrade to 3.52 M33 straight from your OE version.

Format your MS so you can start fresh when installing the M33 CFW (You might wanna backup your gamedata folder) then Download the 3.52 M33 CFW linked above. Extract the file.

Download both the 1.50 and 3.52 firmware. You need to re-name the 3.52 firmware to 352.PBP the 1.50 firmware to 150.PBP. Then add them to the M33CREATOR folder.

Now copy the M33CREATOR folder to the PSP MS directory of ms0:/PSP/GAME folder.

Now go to Game Menu Memory Stick and run the M33CREATOR.

After you run the M33CREATOR it should reboot back to the XMB. It should have created a 3.52 M33 update which you need to select in the Game Menu Memory Stick.

It will flash the files to the PSP and you should be at 3.52 M33 firmware. If it is then format your MS.

Now extract the 3.52 M33-4 update.

Drag the PSP folder inside that update folder into the root of the MS overwriting the files when it asks you to. Now go to Game Menu Memory Stick and run the m33-4 update. This will only take a few seconds.

After the update is finished check and make sure it says 3.52 M33-4 for firmware. If it does say 3.52 m33-4 then format the MS 1 more time.

You are now updated to 3.52 M33-4.

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