You can use our Sitefinity documentation section
in order to upgrade your project. In the articles you can find detailed information connected to the upgrading process. Note that you need to modify your web.config and the SitefinityWebApp.csproj files. The following publication
can be useful.
All the best,
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items