OTA firmwares cannot be restored to. IPSW Downloads collects them for potential future use. They might also be useful if you're doing research.
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.3.2 (16U611) | September 26, 2019 | 1.3 GiB | aff474de5eb0f893d9c65fc0ff71d3dc6ee211f4.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.3.2 (16U611) | September 26, 2019 | 1.3 GiB | fbf527a605f23010885b94e00b98dc6664aaf9d6.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.3.2 (16U611) | September 26, 2019 | 1.3 GiB | 96d9748ecc84e6a32edfed4e5e7e1a23f837bb4e.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.3.2 (16U611) | September 26, 2019 | 1.3 GiB | 188b31656190ca7d049d84806ee59910d6dcb834.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.3.2 (16U611) | September 30, 2019 | 1.3 GiB | d9992520665963425ba38c213cabb8edb0bf377d.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.3.2 (16U611) | September 30, 2019 | 1.3 GiB | 6cc2c7455d432ac5da0588e7105101c40681e7ff.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.3.2 (16U611) | September 30, 2019 | 1.3 GiB | 7d28e85109aaf39e0c59928c3eeadc90647c5eba.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.3.2 (16U611) | September 30, 2019 | 1.3 GiB | 6ae126c66e73d849e51bf3989dc982fb4bf06007.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.3.2 (16U611) | October 9, 2019 | 1.3 GiB | 19e0129e2645334fee618f5e03cfa97a2674dfc9.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.3.2 (16U611) | October 9, 2019 | 1.3 GiB | fbafa4a85e91d3cfe7e2fd60278aea80d0c8fff4.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.3.2 (16U611) | October 9, 2019 | 1.4 GiB | 84bb01ea62dfaf2ca6bde37f8f2e77dde9bb226a.zip |
| ✗ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.3.2 (16U611) | October 9, 2019 | 1.3 GiB | cfe3671dba1063cd1674d239300f4921ea0d3ef5.zip |