watchOS 4.3 (15T5199f) for Apple Watch Series 1 (38mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date March 6, 2018 Upload Date March 2, 2018 Filename f4ceb4e163e95ac7ca4362eb04ad64bb14382418.zip Filesize 1.1 GiB Identifier Watch2,6
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