watchOS 5.1 (16R5577c) 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 October 9, 2018 Upload Date October 5, 2018 Filename ecc63c55431c47ca3b1c8eb20e4cc3e6c58cbc1f.zip Filesize 1.3 GiB Identifier Watch3,3
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