Welcome to the forums.

You will need to extract your m logo splash and then insert it into the v32 (using navtweak).

Then burn a new OS and update you drive, have a look at the navtweak thread, its a sticky on the first page.

As for differences, bug fixes, driver updates, better routing algorithms, new icons, Dual layer dvd disc reading to name a few.

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.