iOS 9.9.11.2.1 (15C6153) 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 December 13, 2017 Upload Date December 11, 2017 Filename 167c493fece1a133f91c37f9843baf305af202b9.zip Filesize 1.8 GiB Identifier iPhone8,1
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