Apple iPhone OS 3.1.2

Apple released iPhone OS 3.1.2 to all iPhone users. According to Apple’s release notes, the update includes the following bug fixes and improvements:

• Resolves sporadic issue that may cause iPhone to not wake from sleep
• Resolves intermittent issue that may interrupt cellular network services until restart
• Fixes bug that could cause occasional crash during video streaming

iPhone 3.1.2 is mostly bug fixes for problems introduced in iPhone 3.1 including the mysterious random shutdowns that users have dubbed “coma mode.” Unfortunately, it doesn’t appear to include a fix for the GPS bug.

Apple said iPhone OS 3.1.2 is compatible with the iPhone, iPhone 3G, and iPhone 3GS. The update is available by plugging your iPhone into your computer and clicking on the update button in iTunes.

It’s a 241.7MB download the iPhone 3G and is available by connecting your iPhone to iTunes and selecting “check for updates” from the Info tab.

After installing 3.1.2, you’ll also be prompted to install v.5.6 of the AT&T carrier settings.

Once finished, your iPhone will restart and immediately alert you to a Carrier Settings update. This is a very small update that will be completed without needing to restart again.