iPhone Software/Firmware Update 1.1.1 coverage roundup

Our sister site iPhone Atlas has extensive coverage of the iPhone 1.1.1 Software/Firmware Update:

• Non-hacked iPhones not recognizing SIM cards after 1.1.1 update Some iPhones that weren't unlocked or hacked are having issues with recognizing their SIM cards after the update.
• You must have iTunes 7.4.x to receive the iPhone Software/Firmware 1.1.1 update Older releases won't prompt for the new version.
• Apple sends iPhone hackers back to the drawing board: 1.1.1 firmware uses different encryption scheme In a serious setback for the capability to install third-party native applications on the iPhone, as well as activate the device without an AT&T SIM card, Apple has changed the encryption methodology for the iPhone with the 1.1.1 firmware/software update, meaning that old processes for "jailbreaking" the device ? putting it into a mode where files can be written to and from the phone ? are now defunct.
• How to restore your iPhone without using firmware 1.1.1 Though you can't downgrade your firmware once you've updated to version 1.1.1, you can avoid applying the update when performing a restore.
• Undocumented new features in iPhone software/firmware 1.1.1 You can now change the sound that is played when a new text message is received. Tap "Settings," then "Sounds," then "New Text Message," and more
• iPhone Software/Firmware Update 1.1.1 released: New features, security changes, update warning This article has information on what's new in the update with regard to features and security, notes about third-party applications being disabled and more.

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