Apple has released the bug-fix 4.3.1 update for the GSM iPhone 4, iPhone 3GS, iPad, iPad 2, and iPod Touch 3 and 4G. (No update has be released for the Verizon iPhone.) Do not update if you depend on an unlock, and make sure to save your SHSH blobs.
This update contains improvements and other bug fixes including:
- Fixes an occasional graphics glitch on iPod touch (4th generation)
- Resolves bugs related to activating and connecting to some cellular networks
- Fixes image flicker when using Apple Digital AV Adapter with some TVs
- Resolves an issue authenticating with some enterprise web services
As usual, plug your device into iTunes to update, or download directly.