The Apple iPhone OS and iPod Touch OS 3.1.2 are now available for download.

iPhone OS 3.1.2 for iPhone contains 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.

The updated firmware 3.1.2 for iPod touch contains the following bug fixes and enhancements:

• Resolves sporadic issue that may cause iPod touch to not wake from sleep.
• Fixes bug that could cause occasional crash during video streaming.

The iPhone Dev Team warns those with jailbroken and unlocked iPhones to avoid the new upgrade, until they can crack it.

The 3.1.2 updates AT&T’s carrier settings file for iPhone customers in the United States, and updates the carrier settings to version 5.6.

Here are the direct download links:

iPhone EDGE (Original/Classic): iPhone1, 1_3.1.2_7D11_Restore.ipsw
iPhone 3G: iPhone1, 2_3.1.2_7D11_Restore.ipsw
iPhone 3GS: iPhone2, 1_3.1.2_7D11_Restore.ipsw

iPod Touch 1G: iPod1, 1_3.1.2_7D11_Restore.ipsw
iPod Touch 2G: iPod2, 1_3.1.2_7D11_Restore.ipsw
iPod Touch 3G: iPod3, 1_3.1.2_7D11_Restore.ipsw

The iPhone Dev Team has announced that they’ve been able to break in the baseband processor of the 3G iPhone. This is exciting news, as it means they have access to the core of the system. This will, in time, give them the ability to fully manipulate the hardware and unlock it.

"Nucleus is the operating system that runs on the PMB8878 baseband processor, we are using minicom running on the iPhone to talk to the basband via AT commands, the AT command shown is a custom AT command that has been inserted into the PMB8878 that starts an application on the baseband, one of the things that this application does is to lists the tasks (processes) that are running within Nucleus."

It’s only a matter of time now before those of us who don’t want to sign up with AT&T will be able to join the iPhone 3G party.

Below is a video of a custom application running on the iPhone 3G baseband.