At the end of my desktop install, I selected Update Packages from Network. The help states that you should get a prompt showing packages you can install, but the next thing I saw was the prompt saying the install was finished.
This was probably because b4 was new and there wasn't anything to download. However, I noticed in 8.2 that this option is notoriously uncommunicative about what it is doing. Under the 8.2 install, I thought my system was hung, since there was no indication that it had found anything to download or any sort of progress bar. There really should be something to indicate what is going on, whether anything is found to download or not.