I've recently Hard Reset (factory reset) my HTC Evo after backing up Applications using File Explorer App. Now, that these applications were restored from the backup, I can't see them in Market Download and therefore I don't receive any updates for them. Per say, I've Smart Keyboard Pro, and I know there's new updated version out but unless I buy the App again, I won't get it... How do you get updates on Applications like these and other??? 
