Apple has just released iPhone firmware 2.2.1 (5H11A) through iTunes.
The firmware update contains minor bug fixes and improvements such as improved stability of Safari and a fix for an issue where some images saved from Mail do not display correctly in the Camera Roll.
The release notes lists minor bug fixes and improvements in iPhone firmware 2.2.1. They are mentioned below:
• Improved general stability of Safari
• Fixed issue where some images saved from Mail do not display correctly in the Camera Roll
If you have jailbroken and/or unlocked your iPhone then updating your iPhone with the latest firmware is not recommended at least until the iPhone Dev Team have not released the latest version of PwnageTool, QuickPwn which can jailbreak iPhone firmware 2.2.1 and yellowsn0w to unlock iPhone 3G.
Folks, if you do not fall in the above category and are planning to update to the latest firmware, please do let us know how it goes.
Dev team has just updated their blog to say:
The firmware update also updates the modem firmware, after the update it is 02.30.03 from 02.28.00 which means that users who have jailbroken and/or unlocked your iPhone should avoid the firmware update.
Emoji icons hack still seems to work.
Netshare is working fine after the update.
As per this Apple discussion thread a nasty SMS related bug has been fixed which was not documented in the release notes. The bug which suddenly prevented users from sending SMS text messages on the iPhone 3G. So if you received the message "Error Sending Message" while attempting to sending an SMS and have upgraded to the latest firmware update, let us know if it has resolved the issue.
In case of iPod Touch users, iPhone firmware 2.2.1 will fix the issue that caused some Apple Lossless (ALAC) audio files to skip during playback
Update 5 (January 27, 2009):
The Dev Team has confirmed that iPhone firmware 2.2.1 Breaks Software Method to Unlock iPhone 3G.
I will keep you posted as soon as I have any more details to share, so stay tuned here at iPhone Hacks.