Harry Potter PS2 PAL not working w SM2?

[fratres]

Hey there, experts, my first post in this great forum, please be gentle with me!
I have been searching for a solution to play a backup-copy of harry potter for a while, the last posts to this subject are very old (as the game is very old), so I want to ask you for an update-information:
I have a PAL Harry Potter PS2 game (CD based) and want to play this on my V3 PS2 (unmodded) with Swap Magic 2 and SlideCard. It is on the "not-working-list", but is that still true or can I burn it with Clone CD and play it? Or could I play it with SM2 and CD Loader?
Or do I need to patch it? Does anyone have a working patch for it (could not find any in the whole net) and has successfully backed up the game?
I would be very happy if anyone could help!