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 | 52c143e1a950e5cdd10613bcdd8e68c396bc03e1.zip |
| ✗ | watchOS 4.3.2 (15U5069a) | June 25, 2018 | 1.1 GiB | 068b26f31ff59a9e4d8208d4c0a473248702d438.zip |
| ✗ | watchOS 4.3.2 (15U5062a) | June 13, 2018 | 1.1 GiB | d8d4297e777e6892842154be05c261256caca08c.zip |
| ✗ | watchOS 4.3.2 (15U5053b) | May 30, 2018 | 1.1 GiB | 2ec1747b425c5474181fb56605ef824c0bfee609.zip |
| ✗ | watchOS 4.3.1 (15T567) | May 29, 2018 | 1.1 GiB | 6439bc8dd1cf815c702f157e28a201a936d5099d.zip |
| ✗ | watchOS 4.3.1 (15T5567a) | May 14, 2018 | 1.1 GiB | 2fad03f908d87823c43e4dce9554c659aa7eb376.zip |
| ✗ | watchOS 4.3.1 (15T5565a) | May 7, 2018 | 1.1 GiB | 3bc948a2adb1b32707068f8ee09f557d146b8bd8.zip |
| ✗ | watchOS 4.3.1 (15T5555c) | May 1, 2018 | 1.1 GiB | f2a41eaedd37017f7a1c95798c1b149affc0fc19.zip |
| ✗ | watchOS 4.3.1 (15T5545b) | April 16, 2018 | 1.1 GiB | c796926fb5748b801c8c6d86ee916a3610b16f4b.zip |
| ✗ | watchOS 4.3.1 (15T5535b) | April 2, 2018 | 1.1 GiB | 4d74dd8e1c749ae9dee34a4e2c917413e8cd2318.zip |
| ✗ | watchOS 4.3 (15T212) | March 29, 2018 | 1.1 GiB | 89b8ad27435fe827a958996bd37cfb8de9734fad.zip |
| ✗ | watchOS 4.3 (15T5212a) | March 16, 2018 | 1.1 GiB | 86b81ec4b5dc5b71ae237853f3fdbc47a6e84a8f.zip |
| ✗ | watchOS 4.3 (15T5209a) | March 12, 2018 | 1.1 GiB | 2b32c51804a7587937ad15959c9cdbfe0bd76f98.zip |
| ✗ | watchOS 4.3 (15T5199f) | March 6, 2018 | 1.1 GiB | c2a379e2b98004408d9a13a4e5d64250d05c2cae.zip |
| ✗ | watchOS 4.3 (15T5187e) | February 21, 2018 | 1.1 GiB | 6dc8f98be3cdc782bd1b12cf44fd93e25f756513.zip |
| ✗ | watchOS 4.2.3 (15S600b) | February 19, 2018 | 1.1 GiB | c39802786e6491e8067d80293553607a357844e1.zip |
| ✗ | watchOS 4.3 (15T5176c) | February 7, 2018 | 1.1 GiB | 7f4999ec3655fcec721f001ec6d36bda17e13d4b.zip |
| ✗ | watchOS 4.3 (15T5165e) | January 25, 2018 | 1.1 GiB | 2161bb3071729e1774b4f9a23a214f4cdafbc13b.zip |
| ✗ | watchOS 4.2.2 (15S542) | January 19, 2018 | 1.1 GiB | 7e72ca6d2e570289f2f5d329a750c7ae22071f74.zip |
| ✗ | watchOS 4.2.2 (15S5540a) | January 9, 2018 | 1.1 GiB | c575a5b06c26b3b6db1c42ef254c560069997016.zip |
| ✗ | watchOS 4.2.2 (15S5536a) | January 3, 2018 | 1.1 GiB | 7336b802d0521053662cf82e09861ea5dc4cd9e6.zip |
| ✗ | watchOS 4.2.2 (15S5534a) | December 19, 2017 | 1.1 GiB | 3ae4f21e6d7ea226fbbb0147664283af29f17f82.zip |
| ✗ | watchOS 4.2.2 (15S5530d) | December 13, 2017 | 1.1 GiB | 41ed62ff14e280d3cbd1799ea6382422d1fe424e.zip |
| ✗ | watchOS 4.2 (15S102) | December 5, 2017 | 1.1 GiB | 4976b6ab8c808397a226257fcba08322cd168597.zip |
| ✗ | watchOS 4.2 (15S5102b) | November 17, 2017 | 1.1 GiB | 760a7b3b3c2fc22fe6ae2d0b6612c065b4bb9466.zip |
| ✗ | watchOS 4.2 (15S5100a) | November 13, 2017 | 1.1 GiB | 4be43a5722df071c1f694aa9d41915ce088ab02b.zip |
| ✗ | watchOS 4.2 (15S5090c) | November 6, 2017 | 1.1 GiB | 13256c0329e8f5ed4e6b355cf14d0fc7f3cd3036.zip |
| ✗ | watchOS 4.2 (15S5085b) | October 30, 2017 | 1.1 GiB | c223aaacdeca4c455da3a3bc3843024ccf36b615.zip |
| ✗ | watchOS 4.1 (15R846) | October 20, 2017 | 1.1 GiB | 77bbcfd1358c1d9798253ae547a639b341fa3bd2.zip |
| ✗ | watchOS 4.1 (15R5843a) | October 16, 2017 | 1.1 GiB | 4833e5d376dce1708ec246159acf2f880c2501fd.zip |
| ✗ | watchOS 4.1 (15R5835d) | October 9, 2017 | 1.1 GiB | 31e79bc02636667277ee12df32db7c9e476194d6.zip |
| ✗ | watchOS 4.1 (15R5823c) | September 27, 2017 | 1.1 GiB | 50f457cd608aa11cb5066f61a52def51b101624e.zip |
| ✗ | watchOS 4.0 (15R372) | September 12, 2017 | 1.1 GiB | d9b8cb294cd11eb5dfd104b0601d305bb095cea1.zip |
| ✗ | watchOS 4.0 (15R5371a) | August 28, 2017 | 1.0 GiB | b7c330ac1460998bacce6047cd6595e8409caeca.zip |
| ✗ | watchOS 4.0 (15R5365a) | August 22, 2017 | 1.0 GiB | 1100e6adca66cbe9c6e1ff3b42c54451be981fd5.zip |
| ✗ | watchOS 3.2.3 (14V753) | July 19, 2017 | 961 MiB | 14a5bdce3e5f3484b992d0eb699c2bc08f04602f.zip |
| ✗ | watchOS 3.2.3 (14V5751a) | June 26, 2017 | 960 MiB | 66426986efc5459b35817002aeb25983092b9028.zip |
| ✗ | watchOS 3.2.3 (14V5744a) | June 13, 2017 | 960 MiB | 9c9970a64247bcfe9350422c880190f4c1d39663.zip |
| ✗ | watchOS 3.2.3 (14V5734a) | May 30, 2017 | 960 MiB | ccafce162e731c9dffa63a4ec5813e2ea8fa72e9.zip |
| ✗ | watchOS 3.2.3 (14V5726a) | May 16, 2017 | 960 MiB | c3f85150aba3e98b28d729c052486ef16fd1a6e9.zip |
| ✗ | watchOS 3.2.2 (14V485) | May 15, 2017 | 960 MiB | fa3dd9700212047025eaec2498862f13472b9629.zip |
| ✗ | watchOS 3.2.2 (14V5485a) | April 24, 2017 | 960 MiB | d078e24cbef65bf414d0dc23b1cb8fd213fcc874.zip |
| ✗ | watchOS 3.2.2 (14V5480a) | April 17, 2017 | 960 MiB | 39f57bd1c05608768ccaf1b730e51356ad5a88b4.zip |
| ✗ | watchOS 3.2.2 (14V5475a) | April 10, 2017 | 960 MiB | 0839cb9d0b80b17ae853c049afb83ecd107a74eb.zip |
| ✗ | watchOS 3.2.2 (14V5465b) | March 28, 2017 | 960 MiB | b79788cf777192c836db8d269bf04118c5c7ac94.zip |
| ✗ | watchOS 3.2 (14V249) | March 27, 2017 | 960 MiB | 7d788aca7cffbff00b4368ce93ad5f4f09450377.zip |
| ✗ | watchOS 3.2 (14V5249a) | March 20, 2017 | 960 MiB | a7778350913f13acb08e4ed58ad8d32b17053898.zip |
| ✗ | watchOS 3.2 (14V5245a) | March 14, 2017 | 960 MiB | db8357c6e35a0e5fd0ad18392241f9e0457055df.zip |
| ✗ | watchOS 3.2 (14V5243a) | March 8, 2017 | 960 MiB | a8c7f16ebdfdce3a96b4a092b03af43f626047f7.zip |
| ✗ | watchOS 3.2 (14V5235b) | February 27, 2017 | 960 MiB | a3dd8bc83f42d591abe73d0103f7f22bb3ac1105.zip |
| ✗ | watchOS 3.2 (14V5224d) | February 20, 2017 | 958 MiB | 5672c59a4fc99beda976b86778e8b237e3c4e000.zip |
| ✗ | watchOS 3.2 (14V5214d) | February 6, 2017 | 958 MiB | 941fec3f5d9bc187f643b7f698da6a246f7fd6fe.zip |
| ✗ | watchOS 3.2 (14V5205d) | January 30, 2017 | 986 MiB | 74dbb7dbe84d9572cc0eb0990e7ffe6dd6bd812a.zip |
| ✗ | watchOS 3.1.3 (14S960) | January 23, 2017 | 943 MiB | cbb0bf8601957a3d19e1a468246ae14664a54dc6.zip |
| ✗ | watchOS 3.1.3 (14S959) | January 9, 2017 | 943 MiB | f4af69a9f3597960bf11bea52674976298839ec7.zip |
| ✗ | watchOS 3.1.3 (14S958) | December 21, 2016 | 943 MiB | d1ee2fe697ed49191a0d04f3197efd4d15626843.zip |
| ✗ | watchOS 3.1.1 (14S883) | December 5, 2016 | 943 MiB | c3e7913d8d4912bb1e2c252ccf0dac778b160c74.zip |
| ✗ | watchOS 3.1.1 (14S879) | November 28, 2016 | 943 MiB | d7d2f9ecdb302e23141e7cb143373ce7fadf5a36.zip |
| ✗ | watchOS 3.1.1 (14S5875b) | November 15, 2016 | 943 MiB | d95c6cba5a3b30140c8139dc6c1d9f3b19dc83f0.zip |
| ✗ | watchOS 3.1.1 (14S5869b) | November 7, 2016 | 944 MiB | a1e449a56caf7df3190c42da48b9311b17bfad7d.zip |
| ✗ | watchOS 3.1.1 (14S5862d) | October 31, 2016 | 944 MiB | cda491787c9ff4b781f49a0dbf023b8939783e69.zip |
| ✗ | watchOS 3.1 (14S471) | October 12, 2016 | 934 MiB | 405a149288045fd48fd708cc01fa948509f41404.zip |
| ✗ | watchOS 3.1 (14S464) | October 4, 2016 | 934 MiB | 4eae1ae95967415a6b379a0f5295a3254d25c0e3.zip |
| ✗ | watchOS 3.1 (14S452) | September 21, 2016 | 930 MiB | acaf53689b176a855e9842e0e6eac5d6ba99ce23.zip |
| ✗ | watchOS 3.0 (14S326) | September 7, 2016 | 932 MiB | 5e566cfaf795592b9e830ac96837345978532b63.zip |
| ✗ | watchOS 3.0 (14S5321a) | August 15, 2016 | 927 MiB | 9bc05bff14875276d1a65f964825c55f357883f5.zip |
| ✗ | watchOS 3.0 (14S5315a) | August 9, 2016 | 927 MiB | 4509ec01031fdf6533db8ed0779a7d023be6ed24.zip |
| ✗ | watchOS 3.0 (14S5302d) | August 1, 2016 | 926 MiB | 08ef705436a408ad462d4e64211f86e8f47e468a.zip |
| ✗ | watchOS 3.0 (14S5290d) | July 18, 2016 | 915 MiB | 33a6ca5df0cbb9dda1c0ec847b9410664dca5c44.zip |
| ✗ | watchOS 3.0 (14S5278d) | July 5, 2016 | 910 MiB | eae4b879e8f24ab4c8e951d8aa1c1b8f18d4bc1f.zip |
| ✗ | watchOS 2.2.2 (13V604) | July 18, 2016 | 701 MiB | b038bc2d2d5c23addcdb203ad127d3e0c7a79008.zip |
| ✗ | watchOS 3.0 (14S5247t) | June 13, 2016 | 906 MiB | 3c89f1a6ce17746ce0e0707310a4cefcf02319be.zip |
| ✗ | watchOS 2.2.2 (13V601) | June 6, 2016 | 701 MiB | 9adcd2a9396b1384036a73d6873f057e9fe720f7.zip |
| ✗ | watchOS 2.2.1 (13V420) | April 20, 2016 | 701 MiB | e2afd5860d78c0fe5416b5441ab2013429680ff5.zip |
| ✗ | watchOS 2.2.1 (13V413) | April 6, 2016 | 701 MiB | 7ca88146b5f51cf4cc626309765575551a8803f8.zip |
| ✗ | watchOS 2.2 (13V144) | March 21, 2016 | 701 MiB | e57bd5943a4cb81a47f70fcec15827cff17b9478.zip |