My uncle's got an iPad 1 and I restored it recently to 5.1.1 - the most up to date firmware. Somehow, every time I try to install an app or update an app from the iPad app store on the device, it asks me to update iOS to the "latest version." The problem is 5.1.1 IS the latest version. Thus, I can't install or update any apps from the iPad. Any thoughts how to get this to work?