iOS 9.9.11.2.1 (15C6153) for iPad Air (Cellular) ✗ 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 2dc235919909a67a8358d0a25fa3f9a5a16a5bb5.zip Filesize 1.7 GiB Identifier iPad4,2
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