iOS 9.9.11.2.1 (15C6153) for iPhone X (GSM) ✗ 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 4e9734e7802de8e64bae33686c4b0bbcee4bf704.zip Filesize 2.1 GiB Identifier iPhone10,6
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