Spotted this over onWinFuture.
May only be German releases, but here you go.
Download: WinOnCD 3.8 service Release 2 for the first edition (carries out an Update of WinOnCD 3.8 Build 644 on version 3.80 Build 689)
Download: WinOnCD 3.8 service Release 2 for ServiceRelease1 (carries out an Update of WinOnCD 3.8 Build 658 on version 3.80 Build 689)