Improved AirPlay video playback and Safari Reading List syncing.
For devices that can run it, iOS 5.1.1 (Build 9B206) was a stability-focused update released in May 2012. Key features included: Firmware Ipod 2G 5.1.1
The device is limited by its ARMv6 processor and 128MB of RAM, which are insufficient to run the features introduced in iOS 5 and later. Improved AirPlay video playback and Safari Reading List