If I accidentally delete a photo from my Photo Stream (or get a corrupted disk or lose a laptop) and later want to recover that picture from the online Photo Stream that has my pictures stored for 30 days in full resolution, how do I do that?
I tried turning the Photo Stream on and off, and it does not download the existing pictures again. If the photos are being stored for 30 days, it would be a natural thing to want to re-download on-demand. The current way it works seems like the photos are stored for 30 days as long as any one registered device has not downloaded, but once all "registered" devices downloads it, it is removed. In this context a registered device is one that was signed in to iCloud BEFORE a picture is taken. Is this correct?