iOS 9.9.15.3.1 (19D6052) 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 February 10, 2022 Upload Date February 7, 2022 Filename e14d4eba4294e2be81de65542fc0f68b88df166f.zip Filesize 4.8 GiB Identifier iPhone13,4
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