Firmware Ipod 2g 5.1.1 Link
For devices that can run it, iOS 5.1.1 (Build 9B206) was a stability-focused update released in May 2012. Key features included:
Improved AirPlay video playback and Safari Reading List syncing. Firmware Ipod 2G 5.1.1
Resolved issues with HDR photo capturing and iPad network switching. For devices that can run it, iOS 5
Addressed vulnerabilities in WebKit and Safari. Modern Use for the iPod touch 2G For devices that can run it
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.