Jolla owners can now install Warehouse ("app store" for free apps) and install Siilihai from there. This allows updates to work.
For detailed instructions see: http://www.jollatides.com/2014/01/08/tutorial-how-to-download-beta-apps-from-openrepos/
Siilihai-mobile is refused by Jolla's official Harbour store because it uses jpg and svg support. These are scheduled to be allowed in Harbour sometime in future.