Let's assume the Deltacopy 1.4 is installed in the C:\Deltacopy filder. Replace the Deltacopy versions of the .dll files in bold below with the updated versions from the C:\cygwin\bin folder :
cygcrypto-0.9.8.dll
cygiconv-2.dll
cygintl-8.dll
cygminires.dll
cygpopt-0.dll (same version?)
cygwin1.dll
cygz.dll
cygiconv-2.dll
cygintl-8.dll
cygminires.dll
cygpopt-0.dll (same version?)
cygwin1.dll
cygz.dll
chmod.exe
rsync.exe
ssh.exe
rsync.exe
ssh.exe
Testing rsync after this gives the following error message :
"The application has failed to start because cyggcc_s-1.dll. Re-installing the application may fix this problem."
So copy cyggcc_s-1.dll from the C:\cygwin\bin too (even though it didn't previously exist in C:\Deltacopy)
To get updates for rsync.exe & ssh.exe, check for the latest version of cwRrsync (4.04 released 26/2/10) at http://sourceforge.net/projects/sereds/files/
Install cwRsync and then copy the new rsync.exe & ssh.exe files from C:\Program Files\cwRsync\bin to C:\Deltacopy
You can now uninstall both cwRsync & Cygwin (Cygwin had no has no automatic uninstall facility so just delete the C:\Cygwin folder and any menu shortcuts)