Running legit UMDs on 3.52 M33-4

I've got 3.52 M33-4 up and running, but I was wondering if there's a program or some workaround to get legit UMDs running on it? (without being forced to upgrade to whatever official firmware is on the disc, of course)

I've been looking around for a while now, but as I'm a total noob, I don't even know what I'm looking for or what it would be called...
Any help would be very much appreciated!

[brentbizzle]

Why don't you just upgrade to a more current m33 build? That will fix your problem.

Any suggestions as to which?
All the firmware readme files and info just list the bug fixes and upgrades, so I've no idea which CFW will allow me to play legit UMD's or how.
Once again, any help for this poor noob is very much appreciated!

well i have absolutely no idea, but I would imagine cfw version X runs umd games for ofw version X, where X is the firmware version.

I suppose a good way to check it is to see if your cfw you are currently running is able to run games that are equal to or less than the cfw version number.

this is totally theoretical however.