Apple releases iOS 5.1 beta and XCode 4.3 to developers

Apple has just begun seeding iOS 5.1 beta and XCode 4.3 to developers. XCode 4.3 is available for download but may not be used to submit apps as it is still in developer preview as well.

iOS SDK 5.1 provides support for developing iOS applications and includes the complete set of Xcode tools, compilers, and frameworks for creating applications for iOS and Mac OS X. These tools include the Xcode IDE and the Instruments analysis tool among many others.

With this software you can develop applications that run on iPhone, iPad, or iPod touch running iOS 5.1. You can also test your applications using the included iOS Simulator, which supports iOS 5.1. There are two Xcode iOS SDK 5.1 images, one for installing on a Macintosh computer running Mac OS X 10.6.7 (Snow Leopard) or later, the other for installing on a Macintosh computer running Mac OS X 10.7 (Lion).

Overall the release notes above are pretty uninformative. We'll update more as we find anything. If you find something, let us know!

Source: [](developer portal](

Allyson Kazmucha

Editor for iMore, Potter pundit, and the ninja in your iOS

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There are 8 comments. Add yours.

Ethan S says:

Ummm, huh? Why would there be a beta 2 without a beta 1? Wow...

Joe McG says:

Hey, great! Maybe now they can release an update so my 4S doesn't die every afternoon...

wormeyman says:

I was so excited to see the change log when i clicked through from google reader alas i was disappointed.

Avenged says:

Battery life is much better on my iPhone 4 (which was already great) and this is just beta 1. Very happy so far!

Dev says:

ars is reporting that a limited set of Siri apis are in 5.1 -- not for control, but per se, but for processing the return responses from Siri.

Faith says:

im tynrig to jailbreak mine but i was using greenp0ise or w/e its called but everytime i tried putting it in the ufb mode or w/e its called it would just turn back on.. does it need to be turned off for this to work or no? please help me