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iPhone OS 3.1.3 unlock app posted

Dev Team tool tweaked

Secure remote control for conventional and virtual desktops

Owners of unlocked iPhones who want to upgrade to the recently released OS 3.1.3 and want to retain the ability to use whatever Sim meets their needs can now do so. The iPhone Dev Team have released a suitable version of its PwnageTool utility.

The Team cautioned against updating. The iPhone OS update is claimed to improve the accuracy of the iPhone 3GS' battery level readout, and if you've not noticed any untoward readings, the Team say, "there’s no reason to update to 3.1.3".

If you must, PwnageTool 3.1.5 is what you need.

The utility creates a modified version of Apple's official update. This can then be applied in the usual way using iTunes. Take care not to update your phone's baseband code, the Team said, or you'll risk losing the unlock and the ability to re-unlock the handset in future.

All the Team's warnings can be viewed at its website. You'll also find links to download the unlock utility. ®

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