Apple releases iPhone Software v2.1

What it fixes

A page dedicated to the release on Apple's website details a dozen major enhancements including:

• Decrease in call set-up failures and dropped calls.
• Significantly better battery life for most users.
• Dramatically reduced time to backup to iTunes.
• Improved email reliability, notably fetching email from POP and Exchange accounts.
• Faster installation of 3rd party applications.
• Fixed bugs causing hangs and crashes for users with lots of third party applications.
• Improved performance in text messaging.
• Faster loading and searching of contacts.
• Improved accuracy of the 3G signal strength display.
• Repeat alert up to two additional times for incoming text messages.
• Option to wipe data after ten failed passcode attempts.
• Genius playlist creation [Illustrated by one reader] .

How to install

Before installing the update, make sure you are using iTunes 8 [Download Link], then connect your iPhone to your computer.

• When iTunes opens, select your iPhone under Devices in the Source List on the left.
• In the iPhone Summary pane, click Check for Update.
• Click Download and Install. Do not disconnect your iPhone until the update has finished.

Security fixes

iPhone Software 2.1 also patch six security vulnerabilities.

• An application may be able to read another application's files.
• Multiple vulnerabilities in FreeType v2.3.5.
• mDNSResponder is susceptible to DNS cache poisoning and may return forged information.
• Predictable TCP initial sequence numbers generation may lead to TCP spoofing or session hijacking.
• An unauthorized user may bypass the Passcode Lock and launch iPhone applications.
• Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution.

Other fixes

Some of the other enhancements and observations reported by readers thus far:

• No sign of background push notification or turn-by-turn GPS support.
• The texting memory leak problem seems to be fixed.
• Apps are running a lot faster.
• No scrolling lag, faster launching of SMS app.
• New "3G" logo in the menu bar sans box.
• Updating applications keeps their icons in place on the home screen.
• App syncs still sluggish compared to media syncs.

Readers are encouraged to share their own discoveries in the AppleInsider forum thread for this article.