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Use the GSM+CDMA (should be model A1429) if you have the Verizon iPhone 5.

On the iPhone 5 the GSM is the AT&T and T-Mo version.
 
I have verizon and the A1429 model so I downloaded the CDMA + GSM one for Iphone 5 but when I go to update itunes says firmware not compatable. any suggestions?
 
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