or maybe download L2 Eurogold's C4 Patch.
http://l2euroworld.com/EuroGold_patch.rar
NOTE:
the patch , has nothing to do with your pack. i mean , you ask a patch for C4 L2JFree.
there is not sth like that. there is a C4 System patch , but not for l2jfree , l2j , l2off , l2jarchid. a c4 patched system fits in every pack , since its a client mod.