I recently purchased a Edge 830. I have 2 issues: 1. I received this message after connecting device to Express when attempting to download an update that was available for Routable Map AU. The message was- "There was an error installing update". 2. I purchased the device to use in Europe in a few weeks time. I have purchased Garmin's Cycle Map of Europe. The error message when I attempt to download is: "Not enough space". If I delete the Australia maps on Garmin, will they be available to me on my return? Any help would be appreciated.