iOS 9.1 (13B5136) for iPhone 6s ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date October 10, 2015 Upload Date October 4, 2015 Filename 1486a7ee8ccdd1fcc47d8a3e61f17e982e2a9b94.zip Filesize 1.4 GiB Identifier iPhone8,1
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