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Apple Releases iPhone OS 3.1.2 [Updated]

Apple today released iPhone OS 3.1.2, addressing several issues regarding waking from sleep, network service disruption, and crashing during video streaming. iPhone users should connect their iPhones to iTunes and click the "Check for Update" button to obtain the new version.

This update contains bug fixes and improvements, including the following:

- 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 update is compatible with all iPhone models and weighs in at approximately 240 MB. Apple introduced iPhone OS 3.1 almost exactly one month ago, bringing a number of new features including Genius recommendation for applications, Genius Mixes for music and purchasing of pre-cut ringtones.

Update: A corresponding update is also available for the iPod touch.

Also, the iPhone OS 3.1.2 update for iPhone in U.S. is accompanied by an update to AT&T's carrier settings file, which brings the settings to version 5.6.

Top Rated Comments

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31 months ago
"Resolves intermittent issue that may interrupt cellular network services until restart"


My problem, exactly.
Rating: 0 Positives / 0 Negatives
31 months ago
What about the battery life issues with 3.1?? Isn't there some type of fix for that or is not an issue?
Rating: 0 Positives / 0 Negatives
31 months ago
Still no wireless syncing? Why on earth does Apple force you to connect physically by USB?
Rating: 0 Positives / 0 Negatives
31 months ago
damnit, i just jailbroke my 3gs!
Rating: 0 Positives / 0 Negatives
31 months ago
I'll stick with 3.0.1 until AT&T offers official tethering support, thankyouverymuch.

And no, I'm not holding my breath...
Rating: 0 Positives / 0 Negatives
31 months ago
I'm still sticking with 3.0... perfectly happy.
Rating: 0 Positives / 0 Negatives
31 months ago
Thank god for the wake from sleep fix. That always caused me to reset.
Rating: 0 Positives / 0 Negatives
31 months ago


- Resolves sporadic issue that may cause iPhone to not wake from sleep
- Resolves intermittent issue that may interrupt cellular network services until restart


Wow, and I thought it was just me. I have had these problems several times a day. I had nearly resorted to throwing my phone at a wall.
Rating: 0 Positives / 0 Negatives
31 months ago
My update was 306MB and after installing I had a carrier update (I had already installed the MMS carrier update from last month).

Carrier is 5.6.
Rating: 0 Positives / 0 Negatives
31 months ago
Was there a carrier update file as well? I'm currently on 3.1 with the official MMS carrier file; however, when I connected my 3GS to the Mac, it reported a new carrier file update as well. Anyone else see that? Anyone know what was changed/addressed?

--DotComCTO
Rating: 0 Positives / 0 Negatives

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