iOS 5.1.1 Software Update
This update contains improvements and bug fixes, including:
- Improves reliability of using HDR option for photos taken using the Lock Screen shortcut
- Addresses bugs that could prevent the new iPad from switching between 2G and 3G networks
- Fixes bugs that affected AirPlay video playback in some circumstances
- Improved reliability for syncing Safari bookmarks and Reading List
- Fixes an issue where 'Unable to purchase' alert could be displayed after successful purchase
For information on the security content of this update, please visit this website:
Read more http://support.apple.com/kb/DL1521