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Blackberry BERRY Z10 16GB FACTORY Unlocked GSM 2G 3G 4G LTE MODEL NO : RFH121LW GSM 2G & 3G 850/900/2100 & 4G LTE 800/900/1800/2600 Black - Page 8 Questions & Answers
Software update
Version 10.3.1 has been rolled out about the time you posted your question. I am guessing you have it by now. You did not mention your Carrier, but they typically control the release date of the new OS and their release date may be later than when BlackBerry releases it.
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