iPhone 2.1 Firmware Update

iPhone 2.1 Firmware Update. Apple finally pushes out Apple iPhone 2.1 OS via iTunes. The latest firmware is much more secure. All of the changes affect security issues noted for iPhone 2.0 through 2.0.2 software releases. None of the problems affect iPhone software prior to 2.0. This version includes many improvements including:
+ Improved battery life management
+ Fewer call setup failures and call drops
+ Faster app installations
+ Passcode Lock has been corrected to fix the emergency call exploit.
+ mDNSResponder has been updated to reduce susceptibility to DNS cache poisoning.
+ an update to the Application Sandbox to enforce proper access restrictions.
+ FreeType vulnerabilities have been shored up.
+ WebKit has been updated to address CSS import statements that were causing problems.
+ TCP initial sequence numbers are now randomly generated to stop attackers from spoofing TCP connections.
+ Reduced backup times to iTunes
+ Improved email reliability (especially for getting mail from POP and Exchange accounts)
+ Improved accuracy on the 3G signal strength display
+ Faster text messaging, loading of contacts and more

You can download iPhone 2.1 Firmware Update from Apple.