Sonic Adventure 2 (ECHELON)

[Infinity_Engine]

This game had a nasty protection near the end of the game so i downloaded the patch for it. It worked but now the game would freeze after i finish the last level. Luckily the game is saved before it freezes so i tried my old sonic2 cd (the one without the protection fix) and it worked.
Now i'd really like to have 1 cd that works all the way. The ppf patch i downloaded was probably only a modified/fixed 1st_read.bin. So i copied the files on my hd, used the 1st_read.bin from the patched cd, binhacked and burned it. Unfortunately it didnt work.
Can someone confirm if only the 1st_read.bin is whats patched...
In the meantime i'll try to find out if there is other stuff that needs to be binhacked.
thx