Apple has released the iPhone SDK 3.1 beta to developers. i Phone SDK 3.0.1 tends to do for minor updates and bug fixes.

email text from Apple to developers

iPhone SDK 3.1 beta and iPhone OS 3.1 beta are now posted to the iPhone Dev Center. These versions are for development and testing only and should be installed on devices dedicated to iPhone OS 3.1 beta software development. Please read the iPhone OS Pre-Install Advisory and the iPhone SDK 3.1 beta release notes before downloading and installing.

[ Techcrunch ]

The dev team has released Ultrasn0w their latest carrier unlock for firmware 3.0. unfortunately, it doesn’t yet works for iPhone 3G S, but it’s safe to upgrade to OS 3.0.

1. Ensure you have upgraded to iPhone OS 3.0
2. Jailbreak your iPhone 3G using redsn0w or PwnageTool (this will also install Cydia/Icy)
3. Run Cydia or Icy
4. Please add the repo repo666.ultrasn0w.com to Cydia or icy
5. Search for ‘ultrasn0w’ in cydia or icy and install ultrasn0w
6. Reboot your iPhone 3G
7. T-Mobile USA users should disable 3G before using ultrasn0w
8. Enjoy

i already followed their step have jailbroken(using redsn0w) and unlocked(ultrasn0w) my iPhone 3G,works flawlessly. Thanks Dev Team!!!!

Everyone was expecting a re-design 3rd Gen iPhone, instead Apple revealed the iPhone 3G S,,S as in Speed …same design with a an upgraded hardware..Here are 10 of the cool things about the iPhone 3G S..

1.it’s faster
iPhone 3G S has a faster processor and more memory

2.Memory
Apple will release to models of the iPhone 3G S:16GB and 32GB

3.Video recording
A feature that should have been in the first 2 Gen iPhone is now available, and video editing

4.Updates camera
It has a 3.0-megapixel camera with autofocus, compared to the 3G 2.0 MP non-autofocus camera. A+

5.Voice Control
iPhone 3G S introduces Voice Control, a voice recognition feature that allows you to make calls and play music by speaking.

6.Compass
It has a built-in compass, it can be use as a standalone app or can be combined with Google Map.

7.Internet tethering
The iPhone 3G S can now be used as a modem.YES!!Internet tethering is now available on the iPhone, but it will not be available at launch in the US, another AT&T failure.

8.Accessibility features
Apple has included a number of features that help people with disabilities use the iPhone 3G S. These include Apple’s VoiceOver function, which reads aloud what is on the screen, a zoom function that magnifies up to five times, and a white on black display option that provides increased contrast.

9.Apple’s Nike+iPhone
Apple’s Nike+iPod fitness feature will be available, a feature which was available on selected iPod Nano models.

10.New Headphones
The iPhone 3G S will include Apple’s remote headphones in the sales package. The new headphones have multi-button remote and volume control keys, as well as a microphone to handle voice control.