iPhoneOS 2.1 (5F136) for iPhone 3G

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

Upload DateSeptember 5, 2008
FilenameiPhone1,2_2.1_5F136_Restore.ipsw
Filesize238 MiB
SHA256sumce946a55baba284544d91a9c05cbe500145d7219830633dbfb6930a17546ecc4
MD5suma79d9fc327afbe687b8036a975c4b105
SHA1sumc6957dcbf2a95ccfd6dce374a727b1b7700a9043
IdentifieriPhone1,2

iPhoneOS 2.1 Release Notes

Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iPhone 2.1 Software Update

iPhone version 2.1 contains many bug fixes and improvements, including the following:

•    decrease in call set-up failures and call drops

•    significantly improved 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 if you have lots of 3rd 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

For feature descriptions and complete instructions, see the user guide for your iPhone at:

http://www.apple.com/support/manuals/iphone

For more information about iPhone, go to:

http://www.apple.com/iphone

To troubleshoot your iPhone, or to view additional support information go to:

http://www.apple.com/support/iphone

For information on the security content of this update, please visit this website:   

http://support.apple.com/kb/HT1222

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