Well, please try again. When you click on link it leads you to:
http://classicwb.abime.net/classicweb/updateos39.htm
When you click to "Packs for v27" you get 404.
I cannot find update.zip for version 2.5
Following the
other link on that page it says: "The last update revision for v27 is N/A, making the packs N/A. <- If "N/A" is listed here, it means no update packs are available for the current release. In order for continued support, please install the complete latest release."
I read that to mean there are no updates for 27. The full release is here:
http://download.abime.net/classicwb/ClassicWB_OS39_v27.zip