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 4 (44mm, LTE) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | e7b6c5dd025374b700e1cfb57723738955b9841a.zip |
| ✗ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | 53ec9bb10def336e2f9cfc0871b884ca126d5168.zip |
| ✗ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | d1f8bfe3d1626e69959f1a109d868632704dd4a0.zip |
| ✗ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | f9487074f0a0a392d88dc3acb50df239cf2e08b1.zip |
| ✗ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | d217234c9aa34e79f4cbc12340153915e5d31587.zip |
| ✗ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 0f686580a5a3ead171b3db39b2437a623cadbac9.zip |
| ✗ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 0c3d78959f52f33a0449209a47384711e16d141f.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.4 GiB | 30b88f9c040a0766e8afa51e120596064c717ba1.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.2 (16T225) | March 27, 2019 | 1.4 GiB | e4de64d09cdc715f4c509807984f07d4bbf18b04.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.4 GiB | 2e675c33f6a3169b02d7b3cfa92e551f1de2dfbf.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.4 GiB | 9ad70e660e2307c661d7abaff800962ce26bd530.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.4 GiB | f4747028b983d7a30b92f95a35464ad2fbc0efb5.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.4 GiB | 72381198df2a7e73494e80d57ff3ce1d6a195bf5.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.4 GiB | cf43436cfc8e83d5236c41721fb0b180e3dcfb13.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | 284c66ad42c9a4fceda841a8e45be3ef7f1d4c10.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | 8bf7ed88ad2154e56f32e0bac1850157ae2129ee.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 3b775f90fdbfdc7262d794c7e5494418ab200cc6.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | 0c117a825160d8ef1564e6227e409b9943de799e.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 0f80f79fb059522a4468c32da0ebae78b1767e12.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | db196d5551692cb0deefaa882e163c4471ba5d57.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 9c6b7f0036cfc0f9d095e11a900b901b4d8baef1.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | e01457318fcf872cf6c745fb86aa2bba4d60123f.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 9618f2382ac8d21a6ec948d4d9aa674202e5fbf8.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | fb848b0e6fa114b52a1293b42a4617d63cf36853.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 533abba3d7f3a6bff3d7953d3ae50ae26de46be9.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 34c829e7e6baed9f4856824c8b78fa70bb4a4ab4.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 875bb8ffe37b7ce8aaab1646b30ac6b2071931ad.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | e8d35b78bbacdc5737c2e9c978171f4733177239.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | c4bf7e136980f8859e18618bdf5e98f1a3a33e28.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | 26a88144adab0604a3f9ed489e00274c95ab6d1a.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 83d85fabdb276a4b1bc8fcf924df160821d89cc9.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | cd3229f5ba6ce95bebe89cd5350cae73f300c870.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 5ae91cc22ec800aacf6057bd03817235c46912ec.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 5100a99b0c381cde76d327af99a887df3e28990d.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | 2ba30e48111d6405377712aec33bf6823e07c8c2.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | 91ccc0597a773e504f43ae1747242c504174bbe1.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | d7fb75cd7c806b65440819ba0d478eabe27dd450.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | e4bd6e79116d9ee8c500785832d9e9a38ea39df7.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 327afefe2d47ce31fbd3d17eb6f1c4145ee68741.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | 7c959a9a5c149f5d94177d9cbda7bbcb21681c23.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 427305185e103077fa31eb9e452e6a0a0ea81422.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 6dd410fe09c7d7f56143395e69e735b9d1d137fe.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | 140117e20191e64b0cc917b4d3048942716bb985.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 5d93d5ba38f01fe0905b94b4ee56cb5c3d860e0e.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | e575145200dc8bcf13543070fb29674fd26834e4.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 37b9f0a2b6ca22c3dba13e4f08241ff6e3037cdf.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | 29e92e2913378fb7da5d9aa6879a14241a821c6c.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 39b7835f8b377d0903891e5b0dad72d56165dbd9.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 2dc5235a82e9a28bc671a79918be1e6065fc0b37.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 0854c3981cfea998c3afd70ebde0f73db6397fed.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | a4e1896a7e70f53db184f0db7508a5b9dd3ba4a4.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 07016a3791efa9441871516d9208059e6bc68589.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | ecd80ff6a51d4202087a8456601e3c3c6aebafe3.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 25fa7c7374db8c5e986d2ac436eec10ff1031cb0.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 82204637daa50e2c4b6a072e3c64e66593ba45a9.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | 817236e20073ac11c417d12920ccd217b241f6b7.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 0baa348bf3fc1adccc2bb8e0bb9391aa9a1f693b.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 80a1810266c5ba79ff7e045071f58f060514854f.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 2d3914ac7bec6b84e49f6051267ccaa4a02ee8be.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | b5f1e80006f4e8b36d1c1555266946ee5fa08354.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | e05cb847f5fd1b2eeea2b5d5ec6d291fcbdd3432.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 64593f0f95971999cb22e61ef8e42bae48e3773a.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | 85a25b2d93481bd52140e21b78abf7cf3b5abcc0.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | c062859bab4ad1b581da0fa920ed4d1c134c6d2b.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | f1fa78dc247ae0038fb8b9808584dfa40bed7fff.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 5ddbd3dbfa17a1d0b82f891767117f3465f7e152.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | 94a53eaa98b199ac1024129be44fa3c786f61645.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | e6d397b43dbb751d9786aed5e0dcc38f9a6b7536.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 8a3348add30463bd75845109a94d5814aa7e2f9a.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | 7682dd497ad997de596da434a00eb2a4ca1120be.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 92a4610a9f14d7a8bfd4ce2015124459c6d450ef.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | 09c6fecf0b49d9ed6bbc3358d70735773ae960e1.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 56417a69a3b5ece44ffb2f035d35d1ea8b2a590f.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | cded5787f6a94fd8e5fa5d640506f1dd5b8b5766.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 46effb129657d1ce29b016acf26978521a6f54ce.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 4d9748ac4a026d4208a79120b43e74ad2d096e00.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | ac6c2c8e4cdd6f0ee2c595253471a8cc5eb0a5fa.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 0cc29a405506c6065c5bebf073ef62d1299d2a28.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | aafc51fc077fbdcc7e701d167abbf550d1873f52.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 6cbacdd62d550bcea79280dc7fcac7239443b8fe.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | 68d7aea541015ecd5959e51995dab2fa280582fa.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 4c5cd8c58f2fe3d2871349d656fa1cd73ee863e9.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | c0da5d06012e47077e5991b55c5f011edd3aae6c.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | 8a8b90307960f50f8a07cf15d5ff14166408ecdd.zip |