iOS 9.9.11.2.1 (15C6153) for iPad Air (WiFi) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date December 13, 2017 Upload Date December 11, 2017 Filename e44b84a44dae6e9c095f9f06e58540e0851105fd.zip Filesize 1.7 GiB Identifier iPad4,1
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