iPhone 2.2 firmware features:
(taken from Apple’s website)
Enhancements to Maps
o Google Street View*
o Public transit and walking directions
o Display address of dropped pins
o Share location via email
Decrease in call setup failures and dropped calls
Enhancements to Mail
o Resolved isolated issues with scheduled fetching of email
o Improved formatting of wide HTML email
Podcasts are now available for download in iTunes application (over Wi-Fi and cellular network)
Improved stability and performance of Safari
Improved sound quality of Visual Voicemail messages
Pressing Home button from any Home screen displays the first Home screen
Preference to turn on/off auto-correction in Keyboard Settings
iPhone 2.2 FAQ
Can I jailbreak iPhone 2.2/iPod Touch 2.2 with QuickPWN or PwnageTool? Yes, you can. Download it at
http://www.quickpwn.com/2008/11/quickpwn-22-jailbreak-download-windows.html for Windows and
http://www.quickpwn.com/2008/11/jailbreak-iphone-22-mac.html for Mac.
Can I unlock the iPhone 3G 2.2 firmware? No, so don’t upgrade to 2.2 if you want to unlock your iPhone 3G. There is no iPhone 3G 2.2 jailbreak and the DevTeam advises you not to update if you want an unlocked iPhone 3G. The DevTeam will be releasing an iPhone 3G 2.1 unlock jailbreak once it’s out.
*taken from quickpwn website