Apple has released iOS 4.1 Beta 2 (build 8B5091b) and SDK (build 10m2305a) for iPhone 4, iPhone 3GS, iPhone 3G and iPod Touch 2G, 3G. Just like iOS 4.1 beta 1, this build of iOS is available for developers only, so if you have a registered Apple Developer account, you can download the update by signing into iPhone Dev Center.
This update counters the issues like iOS 4 slow speed on iPhone 3G and iPhone 4's repositioned proximity sensor. Please note that unlike iOS 4.1 beta 1, this update comes with a baseband upgradation. So, if you are on an unlocked iPhone, avoid updating to iOS 4.1 beta 2 otherwise your device will be locked until iPhone Dev Team releases an unlocking tool.
Download iOS 4.1 Beta 2 and SDK
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