<P> Also on August 24, 2007, Engadget reported, by way of photos and a video clip, that they were called by the "iPhoneSimFree" team, who offered to show Engadget a demonstration of unlocking iPhone using a software - only method . Unlike Hotz's hardware hack, the code in this hack was not made available to the general public . Sales of the unlock started on September 10 . These sales occurred through several resellers who were able to order "keys" from iPhoneSimFree, then pass the "keys" to customers, allowing the customers to use the software . </P> <P> On September 11, after one day of sales, the iPhone Dev Team announced that they had created a working "software unlock", and released it to the public for free . Utilizing the existing unlock requires some technical knowledge, although a simpler, GUI - based version was under construction . Two free, GUI - based unlocking programs that have been made available are AnySim and iUnlock Reloaded . </P> <P> On September 24, 2007 Apple issued a warning that future updates could render unlocked iPhones unusable . On September 27, 2007, owners of unlocked iPhones who took advantage of the version 1.1. 1 update through iTunes reported that the update rendered the device virtually inoperable . There were also reports that the update even affected some iPhones that were not unlocked, and Engadget found that the firmware update had "bricked" unhacked iPhones as well . The firmware update relocks iPhones, but on October 11 iPhoneSIMFree announced that they had hacked the 1.1. 1 iPhone update, not only unlocking them but also unbricking those iPhones which were bricked by the update . </P> <P> On October 16, 2007, the iPhone Dev Team released AnySIM 1.1, the free utility that unlocks iPhones . The updated version works on firmware version 1.1. 1, but doesn't fix baseband problems caused by updating an unlocked 1.0. 2 phone up to 1.1. 1 . </P>

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