watchOS 4.3.1 (15T5545b) for Apple Watch Series 3 (38mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date April 16, 2018 Upload Date April 12, 2018 Filename 3ad7361e80518cfcddb6ed7fff1b8d58a2b57f75.zip Filesize 1.1 GiB Identifier Watch3,3
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