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need help downgrading os on iphone 4

849 Views 9 Replies Latest reply: Oct 8, 2013 4:46 PM by K@ENK STUSSY RSS
peaceopen Calculating status...
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Apr 22, 2013 4:13 PM

I have an old iphone4 from Japan, that I surrendered sim card to SoftBank Phone company... that now  I have been using strictly as a wifi phone, camera, mp3 player, etc.. I recently upgraded the os to os6, not sure why, but now because I dont' have a sim card for it, I can't complete the upgrade.. what can I do?

iPhone 4, iOS 6


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