iPhone OS 3.1.2 Software UpdateNothing to get worked up about. But, it is an update and may prevent future performance problems.
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
network services until restart
• Fixes bug that could
cause occasional crash during
Products compatible with
this software update:
• iPhone 3G
• iPhone 3GS
There's also an update to the AT&T carrier setting but I don't know what that does so far. Peeps on the internet say it's NOT a tethering update.