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 1 (42mm) | watchOS 3.1 (14S452) | September 21, 2016 | 947 MiB | 85df20becf06382dd8e24d80213d211a289c84c8.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 3.1 (14S464) | October 4, 2016 | 950 MiB | 842cc008c61378b879ccc21e9080512a16b6082d.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 3.1 (14S471) | October 12, 2016 | 950 MiB | 7572d50cb590943bc1d0c7a2ff32649393b71240.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 3.1 (14S452) | September 21, 2016 | 946 MiB | 4b85e35f6616230860bb31e4d0478cf4e01518d3.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 3.1 (14S464) | October 4, 2016 | 950 MiB | e4a51c3d33ee8f6c72dccdac6571263d9318b7dd.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 3.1 (14S471) | October 12, 2016 | 950 MiB | cc4227d3656f71da3533a7806609814709146fe3.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 3.1 (14S471) | October 12, 2016 | 952 MiB | 768d6220d1be0bc4969224fb5ffd7bbb9a300c16.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 3.1 (14S452) | September 21, 2016 | 948 MiB | a4e1cd272fb35a81ec4c5511f7264b7826fcecc3.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 3.1 (14S464) | October 4, 2016 | 951 MiB | cd8bdf27802c210a24e7694be92bc7b313b400cf.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 3.1 (14S452) | September 21, 2016 | 947 MiB | 96029157504b2034b4184bbe5fcad1333e9f11f5.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 3.1 (14S464) | October 4, 2016 | 951 MiB | aa1459f6f8f7bfad918b9e038ded944d5b0f6904.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 3.1 (14S471) | October 12, 2016 | 951 MiB | fd5f6b502fc1a5d0e996df94dcc2294ad10a21a7.zip |
| ✗ | Apple Watch (42mm) | watchOS 3.1 (14S452) | September 21, 2016 | 930 MiB | 824330be2c3d4ab90c3f9e80f695a4b85e95a0a9.zip |
| ✗ | Apple Watch (42mm) | watchOS 3.1 (14S464) | October 4, 2016 | 935 MiB | 6042793fee4d61663990466f42eac24ba929ae69.zip |
| ✗ | Apple Watch (42mm) | watchOS 3.1 (14S471) | October 12, 2016 | 935 MiB | 8d4685a4b26e71be839ad8e14439ea8c6f4f60fa.zip |
| ✗ | Apple Watch (38mm) | watchOS 3.1 (14S471) | October 12, 2016 | 934 MiB | 405a149288045fd48fd708cc01fa948509f41404.zip |
| ✗ | Apple Watch (38mm) | watchOS 3.1 (14S452) | September 21, 2016 | 930 MiB | acaf53689b176a855e9842e0e6eac5d6ba99ce23.zip |
| ✗ | Apple Watch (38mm) | watchOS 3.1 (14S464) | October 4, 2016 | 934 MiB | 4eae1ae95967415a6b379a0f5295a3254d25c0e3.zip |