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 3 (42mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | 6a0dcdf6b14fc09c35a713499cfb7d6f124df283.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | c7375e1c64f51311070d1c6ffd4152dfb22b4d4f.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 49dfec82acf26d35ec80194eb3b3e55d1085b910.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | 80ee1770f087b03cdc7dcc051fd4b3771a4aa766.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | c619a81fa57b520416dffa88505209800b3f7346.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | 0a4d488f0a97e03ec6bd4319bdbaf94c5209332c.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 505604f29cded68dcd5f67d9567d02e27c647eb5.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | 021d6b9f3d01c2195d8c9fc7fbbdfbdd0c15016d.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.2 GiB | a67da77990a64d08358f9667876078575bdfc2cf.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.2 GiB | cea9b70aa93ce561df30ba7253d3376ae3512002.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.2 GiB | 7195819c908ff43fa42f9d6985288f4c971740ee.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.2 GiB | 3d532191628f75574993132e6ca11143f129c0c0.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.2 GiB | 630f7ba20a066f278f9cef8f13ac4392e1e6e7d5.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.2 GiB | 4161e7479318ebc53dd2e581239cd9d126e576d9.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.2 GiB | 407284b3ff51d2dcba16822114f6a2128be82561.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.2 GiB | 4511643919e4a5654e097ef8ac90c5ef2e59f291.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | b31690e42808930936bfe95e9bb532ea85238c2d.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | 181f40cc553c6702aad4dd0f8095970339506ed8.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 91af5df5fae0222d7fa4bb51fa1c43b17a4adc46.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | f895326c9eafde548169fffd38e78763e1bf54b5.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | 288bfd7174d23ef318cd268420330a4dc707476c.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 3e8c7fb50a549b57f8bd5b04e54452eb57794d4f.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | c4aa76b84b90d7ef7793033769d9a275f849c28a.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | e9fd9b043be6d24325bc74d4d23e56184cc6fcc3.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | c271bc41a91e7293744928c2f4344f878a18c3b4.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | cff35c6e605e9001d4e071e561c8036cbfa738aa.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 20309f8e3033966b12cdef07363da889da3103f2.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | cc98273d6f6f490308c140fa637bc163fa7d1667.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | 9f1b663818f1fdae5f839cf1cded766902093df1.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | 197366a1dc46c220300d5c69c1785455f995a06c.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 31b4226cb20a503e8666b35d2adbcad74c6417ee.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | a08f2513dfeb131dd09b823bcff99017ede6779a.zip |
| ✗ | Apple Watch (42mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | ace342a0abae45e44a168739b79f0efe5fbe81f2.zip |
| ✗ | Apple Watch (42mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 49c344b882f2ca435cd1d36bf84b38bd5d6d373d.zip |
| ✗ | Apple Watch (42mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | beaec2c87d0d01f5317f98f3ef6a71490919b79d.zip |
| ✗ | Apple Watch (42mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | 9cb35404db08be4c17a9cc7894d888a00120d8df.zip |
| ✗ | Apple Watch (38mm) | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | 52c143e1a950e5cdd10613bcdd8e68c396bc03e1.zip |
| ✗ | Apple Watch (38mm) | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | 2ec1747b425c5474181fb56605ef824c0bfee609.zip |
| ✗ | Apple Watch (38mm) | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | d8d4297e777e6892842154be05c261256caca08c.zip |
| ✗ | Apple Watch (38mm) | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | 068b26f31ff59a9e4d8208d4c0a473248702d438.zip |