Apple Releases iOS 4.3.1 Security and Maintenance Update

The latest firmware from Apple is already here. Just over two weeks after the release of iOS 4.3 for GSM iPhones, Apple has added bug fixes and other minor updates to iOS 4.3.1. The update was made available on iTunes earlier than expected. Verizon iPhones (CDMA) will remain at iOS 4.2.6 for the time being.

iOS 4.3.1 firmware update iTunes

This update is also designed for the iPad, iPad 2 and fourth generation iPod touch. Although the update is relatively minor, if you are one of the users affected by issues addressed in the update you'll want to install the new firmware right away.

According to Apple, the iOS 4.3.1 update contains the following fixes and improvements:

- 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

On Monday, BGR reported that the iOS 4.3.1 update was expected within one or two weeks. Sources also told them the update would include the following fixes:

- Baseband updates for the iPhone 3GS and original iPad
- Fixed memory hang that results in memory corruption when reading large files from USIM filesystem
- Fixed problem with NTLM authentication in apps and on websites
- Fixed issue with the Springboard and 3rd party apps not recognizing the gyroscope on the iPad 2
- Fixed iPad 2 jailbreak vulnerability

Some reports have indicated that the update improves battery life, but this is unconfirmed. Apple also makes no mention of a Safari security fix reportedly in the works. Security researcher Charlie Miller exposed a flaw in the mobile browser that Apple is said to be working on patching, if they haven't already. It remains to be seen whether or not any further updates to 4.3 are forthcoming. With the release of the iPhone 5 coming soon, Apple is expected to jump to iOS 5.0 in June.