Sometimes your iPod may show you strange behavior and does not work properly. In such cases, you may need to restore it or update it to sort out the problem. Restoration method restores your iPod in previous working state and possibly fix the current problems. Updating the updates its data structures and system files to make it work more effectively. However, in some cases, it may become inaccessible or unusable when you try to restore or update it. This behavior may lead to critical data loss and require recover iPod to extract lost data.