iOS 9.1 (13B5137) for iPhone 4s ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
potential future use. They might also be useful if you're doing research.
Release Date October 12, 2015 Upload Date October 9, 2015 Filename 93ba05244744f15117feb116d2b6343836e9e6e7.zip Filesize 1.1 GiB Identifier iPhone4,1
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