OTA firmwares cannot be restored to. IPSW Downloads collects them for potential future use. They might also be useful if you're doing research.
| ✗ | watchOS 4.3.2 (15U70) | July 9, 2018 | 1.1 GiB | 9cb35404db08be4c17a9cc7894d888a00120d8df.zip |
| ✗ | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | beaec2c87d0d01f5317f98f3ef6a71490919b79d.zip |
| ✗ | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | 49c344b882f2ca435cd1d36bf84b38bd5d6d373d.zip |
| ✗ | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | ace342a0abae45e44a168739b79f0efe5fbe81f2.zip |
| ✗ | watchOS 4.3.1 (15T567) | May 29, 2018 | 1.1 GiB | 4794e9f84f14f91f2c0a5b754b79db526e03329b.zip |
| ✗ | watchOS 4.3.1 (15T5567a) | May 14, 2018 | 1.1 GiB | d95a0ff6a67ede818078890f1b953da65b7be92f.zip |
| ✗ | watchOS 4.3.1 (15T5565a) | May 7, 2018 | 1.1 GiB | f0a11e0e980908bf3dcf8a182f329155b4ae6936.zip |
| ✗ | watchOS 4.3.1 (15T5555c) | May 1, 2018 | 1.1 GiB | caf38b21d8d099fde1b5fff05990cf24de59dc2c.zip |
| ✗ | watchOS 4.3.1 (15T5545b) | April 16, 2018 | 1.1 GiB | 7b7223e27183d78356041cda66177da682f805e8.zip |
| ✗ | watchOS 4.3.1 (15T5535b) | April 2, 2018 | 1.1 GiB | 23c6f50ed458d95db4d18c83b2cd765928a287eb.zip |
| ✗ | watchOS 4.3 (15T212) | March 29, 2018 | 1.1 GiB | 734a68921b8db6170cf96adbff195a264f5e0bb2.zip |
| ✗ | watchOS 4.3 (15T5212a) | March 16, 2018 | 1.1 GiB | 5476dbf445ee24230b3be1d7e70ce6217bbd4eb1.zip |
| ✗ | watchOS 4.3 (15T5209a) | March 12, 2018 | 1.1 GiB | 54d13eecfd25494e4ec727c9c6796a5d0005db35.zip |
| ✗ | watchOS 4.3 (15T5199f) | March 6, 2018 | 1.1 GiB | abc65237c19e07a399948f913e359475ef2dd9b6.zip |
| ✗ | watchOS 4.3 (15T5187e) | February 21, 2018 | 1.1 GiB | 44d4552176ba19fc7dff2c7c73817f871d2be834.zip |
| ✗ | watchOS 4.2.3 (15S600b) | February 19, 2018 | 1.1 GiB | 95d993b8959b8c968cf0e3d90a3269155ca9db65.zip |
| ✗ | watchOS 4.3 (15T5176c) | February 7, 2018 | 1.1 GiB | f56b35ee2f9f5882c5e6b0da8389b34c7c0f66e7.zip |
| ✗ | watchOS 4.3 (15T5165e) | January 25, 2018 | 1.1 GiB | 10f03976a46e3644d2c81b716a5a7234077c3fa3.zip |
| ✗ | watchOS 4.2.2 (15S542) | January 19, 2018 | 1.1 GiB | 28335badd5a81ff77878b0d99831cec14bd680f0.zip |
| ✗ | watchOS 4.2.2 (15S5540a) | January 9, 2018 | 1.1 GiB | 01e73fdf05f2074f1b07c6e52d0ed6eb2d06818c.zip |
| ✗ | watchOS 4.2.2 (15S5536a) | January 3, 2018 | 1.1 GiB | b7a4226db986a4aaa6377c2401c49e4e98d3287c.zip |
| ✗ | watchOS 4.2.2 (15S5534a) | December 19, 2017 | 1.1 GiB | fe76687104aa16df3ba0854d6e0003446d6e8e18.zip |
| ✗ | watchOS 4.2.2 (15S5530d) | December 13, 2017 | 1.1 GiB | 857ff8907d36342a0bcafd94ae7aa4c99561b3d4.zip |
| ✗ | watchOS 4.2 (15S102) | December 5, 2017 | 1.1 GiB | 8de42cc4e554376e623da175c3e203c98989740d.zip |
| ✗ | watchOS 4.2 (15S5102b) | November 17, 2017 | 1.1 GiB | b94538905a797c2a2ef423f4afba1c9f9efae33d.zip |
| ✗ | watchOS 4.2 (15S5100a) | November 13, 2017 | 1.1 GiB | 84ab79fc4489b919d73344561db1c93422cbc770.zip |
| ✗ | watchOS 4.2 (15S5090c) | November 6, 2017 | 1.1 GiB | dc6a2fa84fbe4be886313ba338e5d33dd98c476d.zip |
| ✗ | watchOS 4.2 (15S5085b) | October 30, 2017 | 1.1 GiB | 03348ce419820a30b048e044596acb67d98b7932.zip |
| ✗ | watchOS 4.1 (15R846) | October 20, 2017 | 1.1 GiB | b9e191b227fb413b7f09f02efcf10536fa03747d.zip |
| ✗ | watchOS 4.1 (15R5843a) | October 16, 2017 | 1.1 GiB | 9a4abdb27377a45404e81549fce952c8a0d81e90.zip |
| ✗ | watchOS 4.1 (15R5835d) | October 9, 2017 | 1.1 GiB | afbcb34ce11e27a114fdcdf12aad8b7e73ef8910.zip |
| ✗ | watchOS 4.1 (15R5823c) | September 27, 2017 | 1.1 GiB | 072e4b836092c9054f77f3fa72fc2c74c8ed0777.zip |
| ✗ | watchOS 4.0 (15R372) | September 12, 2017 | 1.1 GiB | 4b2a10e3de637c553f982604194988c90213478c.zip |
| ✗ | watchOS 4.0 (15R5371a) | August 28, 2017 | 1.1 GiB | 4e2c0c8568a277634786dac1ac1a105df8466042.zip |
| ✗ | watchOS 4.0 (15R5365a) | August 22, 2017 | 1.1 GiB | e8efda84b6a425012da945bd23bac1e40642d15d.zip |
| ✗ | watchOS 3.2.3 (14V753) | July 19, 2017 | 961 MiB | 3a49de18897514b8eb350c8b79e34aae6b080ea5.zip |
| ✗ | watchOS 3.2.3 (14V5751a) | June 26, 2017 | 961 MiB | 48ae0a5058ef65a76726ac62becd38eded27fea2.zip |
| ✗ | watchOS 3.2.3 (14V5744a) | June 13, 2017 | 961 MiB | b2751370f56d9cc2c1f79e4c987ef19a25dff8e9.zip |
| ✗ | watchOS 3.2.3 (14V5734a) | May 30, 2017 | 961 MiB | e243adc099593ca1ad01e62ed5fe5f404cf61c63.zip |
| ✗ | watchOS 3.2.3 (14V5726a) | May 16, 2017 | 961 MiB | ed1432861c89c9b77a70f5a042370f9f8bddc863.zip |
| ✗ | watchOS 3.2.2 (14V485) | May 15, 2017 | 961 MiB | d4d1baa6b538244c774d304488f94e7da327f8a3.zip |
| ✗ | watchOS 3.2.2 (14V5485a) | April 24, 2017 | 961 MiB | fe94819a09dc7bc846770043a1b4eebcf7f0a6fe.zip |
| ✗ | watchOS 3.2.2 (14V5480a) | April 17, 2017 | 961 MiB | 17191807777c284ade6d2dd7209a72384956e63e.zip |
| ✗ | watchOS 3.2.2 (14V5475a) | April 10, 2017 | 961 MiB | 26d5a84bbcaa9146baf41c29bfc75fa3f4761a61.zip |
| ✗ | watchOS 3.2.2 (14V5465b) | March 28, 2017 | 961 MiB | 997beb19c05bb2f4647c51468b8f207621cbc21e.zip |
| ✗ | watchOS 3.2 (14V249) | March 27, 2017 | 961 MiB | 5394e91ccbd59fcc59e4b4ae83d23e21ed496dfd.zip |
| ✗ | watchOS 3.2 (14V5249a) | March 20, 2017 | 960 MiB | 899be08626153390e22992b59aa7b245f3095612.zip |
| ✗ | watchOS 3.2 (14V5245a) | March 14, 2017 | 960 MiB | f56f341054702e63820ac459323e988ea17c3b55.zip |
| ✗ | watchOS 3.2 (14V5243a) | March 8, 2017 | 960 MiB | 862b92b80ad7ee06c4137cf2a0459551866c297d.zip |
| ✗ | watchOS 3.2 (14V5235b) | February 27, 2017 | 960 MiB | 8d31e81e8868f5adf940e1611388934557a07f8f.zip |
| ✗ | watchOS 3.2 (14V5224d) | February 20, 2017 | 959 MiB | 789ea64cf8e3bbd1fbd164076897d35907c88e8a.zip |
| ✗ | watchOS 3.2 (14V5214d) | February 6, 2017 | 958 MiB | baf38fe9eab1e1bba4e46b9688a50b4a8b73b874.zip |
| ✗ | watchOS 3.2 (14V5205d) | January 30, 2017 | 987 MiB | 9226d67f8398abc63134d2a7dc8627d9f78c0893.zip |
| ✗ | watchOS 3.1.3 (14S960) | January 23, 2017 | 943 MiB | e55cdc50b6bf5a014b4678083415802880a9234c.zip |
| ✗ | watchOS 3.1.3 (14S959) | January 9, 2017 | 943 MiB | da430a7f4473595cedb662c5360bf60c7c8ff04d.zip |
| ✗ | watchOS 3.1.3 (14S958) | December 21, 2016 | 944 MiB | ff024c3020c7692548aad89309019c23f16e06c9.zip |
| ✗ | watchOS 3.1.1 (14S883) | December 5, 2016 | 943 MiB | ed0bf2eb3a6332874c8bf94cdf72cd196f1a62fe.zip |
| ✗ | watchOS 3.1.1 (14S879) | November 28, 2016 | 943 MiB | f93e9a3a6c1a0e1f46b9a0d153485d891ed334bc.zip |
| ✗ | watchOS 3.1.1 (14S5875b) | November 15, 2016 | 943 MiB | f7b00f6ced1110285e26e5bc7c62fe55fdd0ed7a.zip |
| ✗ | watchOS 3.1.1 (14S5869b) | November 7, 2016 | 945 MiB | 8f082a73db855dcf4bab9eba58c65075f3b3c3f7.zip |
| ✗ | watchOS 3.1.1 (14S5862d) | October 31, 2016 | 945 MiB | 0c087eda1306ea399c8e63826752e6fa132dc24c.zip |
| ✗ | watchOS 3.1 (14S471) | October 12, 2016 | 935 MiB | 8d4685a4b26e71be839ad8e14439ea8c6f4f60fa.zip |
| ✗ | watchOS 3.1 (14S464) | October 4, 2016 | 935 MiB | 6042793fee4d61663990466f42eac24ba929ae69.zip |
| ✗ | watchOS 3.1 (14S452) | September 21, 2016 | 930 MiB | 824330be2c3d4ab90c3f9e80f695a4b85e95a0a9.zip |
| ✗ | watchOS 3.0 (14S326) | September 7, 2016 | 933 MiB | 70ba0f2c40bf7917cc24d6a9784855379c5f45e9.zip |
| ✗ | watchOS 3.0 (14S5321a) | August 15, 2016 | 928 MiB | b52c3829a3ad724a830183f6585aa431d174ed7f.zip |
| ✗ | watchOS 3.0 (14S5315a) | August 9, 2016 | 928 MiB | 6be58fd7b435ff59617c52b067e51c6cdfea83ae.zip |
| ✗ | watchOS 3.0 (14S5302d) | August 1, 2016 | 927 MiB | 26031382818e2891148a92043160e78610722800.zip |
| ✗ | watchOS 3.0 (14S5290d) | July 18, 2016 | 916 MiB | 1d4aa98b47e199e1f36730e46beb7108a9c632ce.zip |
| ✗ | watchOS 3.0 (14S5278d) | July 5, 2016 | 911 MiB | c408dbaf5fd86a889a4e8db8ba637ae1fcd8d295.zip |
| ✗ | watchOS 2.2.2 (13V604) | July 18, 2016 | 702 MiB | 9ed4dffb9a7603918e7cfc5ac158b28e23abfe82.zip |
| ✗ | watchOS 3.0 (14S5247t) | June 13, 2016 | 907 MiB | 12659270793d5450b247ac1300dbaf92142f7734.zip |
| ✗ | watchOS 2.2.2 (13V601) | June 6, 2016 | 702 MiB | b430b17f8e4133b851cdafb6974064107beb4e7d.zip |
| ✗ | watchOS 2.2.1 (13V420) | April 20, 2016 | 702 MiB | cc43b650ba52e0c206b169240acd605acd64617f.zip |
| ✗ | watchOS 2.2.1 (13V413) | April 6, 2016 | 702 MiB | 5244e29002df3cc89ec5bf69662a143bfe846d72.zip |
| ✗ | watchOS 2.2 (13V144) | March 21, 2016 | 701 MiB | cb97b6428d6698261550d3aed12746a11577faf2.zip |