@Lowantong: Where was your device bought/shipped to, and is it WiFi only or 3G?
(On a semi-wild guess: Russia or Brazil?)
(But, yes, as @knc1 said, you're not doing anything wrong, it's simply that this specific variant of PW3 was still flagged as unidentified. Good news: that was the last one. From this PW3 generation, at least.).
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