iOS 9.9.15.2 (19C6056) for iPhone 12 Pro Max ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date December 13, 2021 Upload Date December 3, 2021 Filename 7fda8c1d3993350bcaeee424d0c96ede665eecb0.zip Filesize 4.9 GiB Identifier iPhone13,4
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