You need to get the apk with the emulator or from an Android phone and install on the edge. It will sync with appbrain and let you know which apps have updates available. It will not install those apps since we don't have market access, but now you can again use the emulator or phone to get the update, transfer to edge and install. This is useful because developers often add new features or resolve issues. Without market we are not informed of updates in most cases. I always back up the older version first in case the new version does not work on the edge.