watchOS 5.3.4 (16U627) for Apple Watch Series 4 (40mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date December 10, 2019 Upload Date November 21, 2019 Filename e47845b9ea6f9c37083d83b42dc41bf286ee2ea6.zip Filesize 1.3 GiB Identifier Watch4,1
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