watchOS 5.3.3 (16U620) for Apple Watch Series 1 (38mm) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
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Release Date October 29, 2019 Upload Date October 17, 2019 Filename 6fd10a252b94f13dc3f86f6a0733eafaa41f07b7.zip Filesize 1.3 GiB Identifier Watch2,6
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