The problem is, I have lost the CD and all I have is a CD with other JJ2 stuff from my aunt's comp. However, I think something went bamboozle when copying and this is the result...

Yes, I'm sure I don't have the OEM version. I looked into the corner of my JJ2 menu and it says 1.20.

Does anyone have a 1.20 -> 1.21 patch? Does it even exist?