revert back to android 2.1 in samsung galaxy 5 aka europa from cyanogenmod 7 gingerbread 2.3 I have installed android 2.3 gingerbread in my galaxy 5 europa GT-I5500 following this post
Now want to go back to 2.1, any dictation how to do that? Thanks for your help.
Is there something wrong with Cyanogenmod?

What you want is the stock version of android Samsung put on the phone, there is no revert as it was deleted when you put cyanogen. As you dont seem to have a copy I would go to Samsung support site or you will have to trust another source on the net and download it there. This would be another great community resource for your phone http://forum.xda-developers.com/forumdisplay.php?f=1156