I live in The Netherlands, and so (of course) I have a EURO region PSP. But when I downgrade to 1.5 it also changes the regioncode (that's what I think). Because in 1.5 I can not play any movie/music from even the demo disk. But I could do this in it's original 1.5.1 and the upgrade to 2.0. But when I downgrade to the JAP or US 1.5's I can't play any UMD movies or music (just games).
So I was wondering if any other euro region people have the same prob, and whether or not there is a solution to this? (maybe a 1.5 euro firmware?)