At this moment, I've only been able to update the navigation data. Not the STAR/SID database. You have to use the AIRAC cycle for the PMDG series. There are also entries in the NavAID database that need to be deleted or it will freeze FS. See this post: http://forum.avsim.net/topic/244039-updating-nav-database/. I've tried to use the data in the AIRAC cycle for the iFly 737NG but there is a difference in the file format that makes it impossible to be read by the FMC. I'm trying to figure out if I can modify them without too much of a hassle but there doesn't seem to be an easy way. So for now, I have to manually enter the info for the SID and STAR to be able to fly them. Hope this helps!!!