Apple released version 3.1.2 of its iPhone OS to tackle a series of known device issues impacting sleep mode, network service 
disruptions and software crashes, concurrently unveiling the iPhone SDK 3.1.2 as well. According to Apple, iPhone OS 3.1.2 resolves sporadic issues that may prevent the smartphone from waking from sleep, fixes intermittent issues that may interrupt cellular network services until restart and patches a bug that could cause occasional crash during video streaming.
The iPhone SDK update is similarly low-key. Most notably, instruments can now profile iPhone and iPod touch applications on a device via WiFi connection--also, the iPhone Development grouping now collects crash logs, install bundles and provisioning profiles in a single location. In addition, iPhone OS 3.1 Simulator uses frameworks more closely matching the device. A version is available for developers running Mac OS X Snow Leopard. Developers can download iPhone SDK 3.1.2 here.
For more on iPhone SDK 3.1.2:
- read this iPhone Blog article
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