In Ecdesign 4.5 you select which updates you would like to download.
There are 3 types of updates. Software updates, material updates and 3D object updates.
When running the Ecdesign 4.5 update check, the system will check for updates and then ask if you would like to download the software- and material updates.
3D object updates are done from the OBJECT TAB. Next to a library (vendor) a green icon will appear if updates are available. Simply click on the green icon to start downloading the 3D object updates.