watchOS 4.3.1 (15T5555c) for Apple Watch Series 3 (38mm, LTE) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date May 1, 2018 Upload Date April 26, 2018 Filename 3e3f87df8ae2bca1d0f7bb803f8425ec96ee9598.zip Filesize 1.2 GiB Identifier Watch3,1
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