Apple has released iOS 4.3.1. The 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
iOS 4.3.1 is recommended for the GSM iPhone 4, iPhone 3GS, iPad 2, iPad, and the third- and fourth-generation iPod touch. No update is available for the CDMA iPhone running on Verizon.