watchOS 5.3.6 (16U662) for Apple Watch Series 3 (42mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date March 24, 2020 Upload Date March 19, 2020 Filename 026247342ecc5ba2e423792b2190e3e954a8dd6b.zip Filesize 1.3 GiB Identifier Watch3,4
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