How to Freely Download iPhone OS 3.1.2 Firmware Update??

Apple has released the latest firmware for iPhone OS. The new version, iPhone OS 3.1.2 is available for iPhone, iPhone 3G, iPhone 3GS and iPod touch. The upgraded firmware addresses several issues and problems for both iPhone and iPod Touch. Download links for iPhone OS 3.1.2 is now available on iTunes 9.0.

Here's the upgrades and bug fixes in new firmware 3.1.2 for iPhone and iPod Touch

• It fixes for issues related to interrupted cellular network services until restart
• It fixes for intermittent incidents of iPhone and iPod Touch not waking up from sleep
• The firmware fixes the bug that causes occasional crash during video streaming
• Fixes the bug that causes occasional crash during video streaming

Just a month ago Apple released iPhone OS firmware 3.1 that was upgraded with new features, security fixes, and enhancements. According to the reports, iPhone OS 3.1 was more buggy than iPhone OS version 3.0 and suffered from power consumption issues.

How to upgrade to new iPhone firmware OS version 3.1.2

Upgrading to new iPhone firmware OS version 3.1.2 would break existing jailbreak and unlock. iPhone and iPod touch owners who jailbreak and unlock their device should not upgrade to iPhone OS 3.1.2. To upgrade iPhone and iPod Touch just connect the mobile device to PC and start iTunes. You would get the update message message automatically. Download the the individual standalone iPhone/iPod Firmware Update file (IPSW) for manual offline updating from the given links

Here are the download links for

iPhone EDGE(Original/Classic)
iPhone 3G
iPhone 3GS
iPod Touch 1G
iPod Touch 3G