OK, sure.

1. Get the 3.52 M33 release from www.dark-alex.org. Open it, and extract the M33CREATOR folder to the PSP/GAME150 folder on your PSP.
2. Download the 1.50 and 3.52 updates. You may be able to get them from this site, if not, PSP Hacks · Hacks, PSP Downloads, Cracks, Mods, Homebrew, Utilities · Hack Sony PlayStation Portable has them.
3. Extract the EBOOT.PBPs (if they're compressed), and rename the 1.50 one to 150.PBP and the 3.52 one to 352.PBP.
4. Copy these two files (150.PBP and 352.PBP) to the /PSP/GAME150/M33CREATOR folder.
5. Charge your battery up to 75%, and run the 3.52 M33 update program.

That should do you, up to 3.52 M33. Upgrading to 3.52 M33-4 is just downloading the update from dark-alex.org, and extracting the PSP folder to the root of your MS and running the update. (To extract to the root, select where it says 'Removable Disk (X: )', where X is your PSP's drive letter, on the extract screen.)

These instructions are assuming you have decent experience with your computer, WinRAR and enough experience with your PSP to be able to extract files to it. If you don't understand my instructions, just say so. (Come to think of it, there should be a formal guide on these forums for upgrading to 3.71 M33-4...)

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