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Apple said today that a firmware update to the iPhone due to be released later this week "will likely result" in SIM-unlocked iPhones turning into very expensive bricks. "Apple has discovered that many of the unauthorized iPhone unlocking programs available on the Internet cause irreparable damage to the iPhone's software, which will likely result in the modified iPhone becoming permanently inoperable when a future Apple-supplied iPhone software update is installed," said Apple in a statement issued this afternoon.