iOS 9.9.15.1 (19B6074) 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 October 25, 2021 Upload Date October 15, 2021 Filename 3d692f794162a16927540a3eeff53de0980c4947.zip Filesize 4.9 GiB Identifier iPhone13,4
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