by Dalai » 09.03.2017, 13:53
You can either unpack the new version over the existing one, overwriting all files in the process (the repository will stay untouched). Or you can copy/move the update directories in wsusoffline\client to the new version. This depends on the updates you downloaded, but mainly these are w*, ofc, o2*, dotnet, cpp, win and wsus. Do not attempt to copy/move the whole client directory because it contains scripts and UpdateInstaller and stuff.
The update procedure is also part of the FAQ in wsusoffline\doc\faq-*.txt.
Regards
Dalai