This package provides the installation files for Apple iPod Touch 4G (iPod 4,1) Firmware iOS 5.1.1. How to update / restore your iPod using the downloaded IPSW file:
Download current and previous versions of Apple's iOS, iPadOS, watchOS, tvOS, audioOS and macOS firmware and receive notifications when new firmwares are released.
This update contains over 200 new features, including bug fixes. Some features may not be available for all countries or all areas. Please visit this website for more details: http://www.apple.com/ios/feature-availability For information on the security
To determine your iPod device model, refer to the lists of iPods, iPod minis, iPod nanos, and iPod shuffles. iPod firmware can be restored using Finder, Apple Devices, or iTunes.