This site is being deprecated.
Please see the official X‑Plane Support page for help.
11.02 is still in beta, so it is only available if you have used the installer to update and checked the box to "get betas." It is fairly stable as it is a minor patch and not a major version update (like 11.10 will be) but here are some old but good tips on using betas.
This site is no longer being actively maintained.