watchOS 5.3.10 (16U711) for Apple Watch Series 4 (44mm, LTE) ✓ 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 22232142cd5865ff580aa468ed9f0be167c1b07a.zip Filesize 1.3 GiB Identifier Watch4,4
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