watchOS 5.3.10 (16U711) for Apple Watch Series 1 (42mm) ✓ This OTA is signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
potential future use. They might also be useful if you're doing research.
Release Date March 24, 2026 Upload Date March 16, 2026 Filename d962513b1b543b46bb1a22e0cc30eb8a1ad5b6c2.zip Filesize 1.3 GiB Identifier Watch2,7
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