watchOS 4.3.1 (15T5565a) for Apple Watch Series 1 (42mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date May 7, 2018 Upload Date May 3, 2018 Filename d1dbf10885271e8a05ff088bc8991996c031acf0.zip Filesize 1.1 GiB Identifier Watch2,7
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