watchOS 5.3.4 (16U627) for Apple Watch Series 4 (40mm, LTE) ✗ 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 9af57196426016c10c2349539beaf1a653c613a0.zip Filesize 1.4 GiB Identifier Watch4,3
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