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 5.0 (16R364) | September 12, 2018 | 1.4 GiB | aec5afc4214d1f5d7c19f4cb2defa3bbacd62b7e.zip |
| ✗ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.0 (16R364) | September 12, 2018 | 1.4 GiB | 97124f641adf651481548e53814705697c6d7896.zip |
| ✗ | Apple Watch Series 4 (44mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | 135db3372462974a8bac5045d419ddb2d15e4a82.zip |
| ✗ | Apple Watch Series 4 (40mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | b9e41f94bac29c19a23dfb87be450b03d184a01e.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | 1952afcd67cd572eb01bbdf82f31a855381c75b3.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | fa6240599ab4666fe059a184c156b8b816ad8bd4.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | b5ee5d25a75616d305e871a0b2186e0ace772b5e.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | 0db578e0af6e3b2924785127475b50c91b85ccd5.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | f8ca0996d621c8589bf8c2edd3110cd04f58969e.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | 8c032d75b0cd4a96a21bcafdabdc0bfeda256d53.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | e35017f3eeeb695977c61b46ce9ab5226253a312.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.0 GiB | 8d157498f90bbed42a5ab54e46eb4025799497e8.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.0 GiB | 415b7f32e7c37d4677e1cdf4d1fabc99c64247f3.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | de28f6d86b349fb660c77db61a1f5f1c768b2193.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | f85860bd9551a6d2da6f69964dcb7ea090f53840.zip |
| ✗ | Apple Watch Series 3 (42mm) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | 3e2da455bbe46d308e553a7f316489ef18dc846b.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | 4875fe754e6516b416dde7708aaa4ac085fffa41.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | 17eb578f1df0da3af949f25bcccc6f3f1e26c105.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | 87dd48508c655d651d6e919856d131f8eac13ff2.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | 70a5bc80fb9ad1e940a0f93d028894d4a372ae25.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | 3b0dc5a291057177bd61b81e80d1dc97aa18bb22.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | edaa5d05684d5cf2bfbfe82bab07756530926710.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | b2be363b8ed193b0600592217d1ef8eb74aad79e.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.0 GiB | d5169d2fade06029f27c814f220063463b550c74.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.0 GiB | cc3e7c0ac74405c80d8db45cf766620025e55fe4.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | 76af63262dd1bfed41628a6c6eea811ba24014b9.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | a4cdaf1ab6020d8b8179566da30cd11e89a38c66.zip |
| ✗ | Apple Watch Series 3 (38mm) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | 047cfde2819cacc3a04f0e49c59384aa60771cfd.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | eea0c4f774915b63fe3828d6921f442ea1c737e2.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | 842298770c725463b711ff1cf129b762544e2ae6.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | 99b468e4e53d826963b876c16aac18eb824781f5.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | 8881f14ab1f33844782118466666d8f4670de869.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | 1619f3fd60148c17d6c49155e29ef8fb7010b2d1.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | ec085884fcaf8fb072eef034a916d88442e51467.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | 096a49490769bd71a822a81d2b65a31c706ce339.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.1 GiB | 819cc299bbfa2dde77489d8a43a2523540e313d5.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.1 GiB | 1fe80f9861fae33ddf2d25644c1e0541c18163e9.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | e30af25d8b493dd3e0fc11960f4437df9d2b0586.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | 0f2f7af963f5fdf849126c28c54d4952fea199bb.zip |
| ✗ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | 877eac40121424db2c0672704fbc06ca4a15d997.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | f9240607e19eb405166819e7a6fb8018502c781b.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | c89e8152a66b345a944c8db9d57f8a563c96fa92.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | 8877badd57674f837eb24ce10967b1f19dc0272c.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | dbb12fce9bb46d3d7257f0cf78b09ee7c483e815.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | 836176f6c29ca0235244c8a78bebe8b588c52a56.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | ce5a86bd253ecce314bdb0ec8213623123fbbf32.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | 48079856313d80abebf978104513aea001446199.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.1 GiB | 5d0a6888a4661272b014ed1c3053d961486c2063.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | 6e2cd8bebbeada82d4ff679c01852336e40f12c2.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | 77f5b889897a5308af99d657639d306ce18b2fab.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.1 GiB | ec4aa5876bc47d8399212716c826642e5f96f193.zip |
| ✗ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | 5f5a88f0f5a9bde96bad42cc55bec94cfecd376c.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.0 GiB | 2f3ba7c2e8dd26a88fdcfa6f897c0354f507c87e.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | 793915d165213fde69326b3468a4fc7c7de6ca7c.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | c16ce16c0ce9453ba072139042572ed3b86192b2.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | 43fc41bab424871567b9c184c0dbb8e54cb18a19.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | f1603f71931da9adbfc2a0708a699138ffa50003.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | 6325f67de5d105df4c201c5419b1fc1ac4770687.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | ac4e30cfb6c24ae1fe3f66d31a9a179edcb080f8.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | 05c0e799d332633e7d7a21af88d0a40efbc21d76.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.0 GiB | dd476c79257539ea09e8f8d7087b43068a51168f.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | fa7d338bed67ecf2a4113d71f89d66e3a2e581ac.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | 29fb2c4bb49d88393e86e34389d24d32ba7e7f6d.zip |
| ✗ | Apple Watch Series 1 (42mm) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | 93057e0fff396dc66798e19882b0ceda9bae9d67.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | 399da14c502ae850367625c1d708a327c5501489.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.2 GiB | 80c925d1c359ec261d68af02f44e436cf7d747ca.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | b7cba91fec63103c17d3cabe149e39adb0f20a87.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | fac130cedb285cc2942235db18289bc9fb396386.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | f2ec92edf22fe6442ffb4b2dd199df8e239cb7ef.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | 4e0a2ddb4a408bdf5209f36844c82852e97bd673.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | f8f7eba7e939f9dd2e04c9ff5c84f14f8770e204.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.0 GiB | c56584f17c6c4d428c143e29b4d50ee7a2e31038.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.0 GiB | a0b82aae045eae46393e3633ac6e5a2b7b01c727.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | bf798de88b3d40ca27836b91c6298bab01b475f7.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | d1f9058a30fec6d4cb7e00daa340eee8df01c9ad.zip |
| ✗ | Apple Watch Series 1 (38mm) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | a0a759f5339548ee3bc545bc049322f5d9425219.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | ada37fead73cc67b89e7b6e1c19f916aed36194c.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | 8c34828a87d4bede0ffbc78576f5d5b87e145351.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | 7313676f4e8daa11ff77b16d020d933829f30613.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | c9fd3b931b2306c85137992f49e1a3630a18c410.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | ad2d1c04ad2976687e03410a5421ddd7110ca3a2.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | c77fbd4ca9b740b3e60984271c0b9563d62684be.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | 286542808a87b4b7845589ddc199d55eca75875f.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.0 GiB | 95e5abe473b580fca189fa8ce797756da5a6a08b.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.0 GiB | fe4bf2d2e781eb84d8129d3d56a6fd2893c15102.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | 94011adc6a86861339cca6311322eca7a959faf5.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | 4787051c337ce2d8a35b7803626dc776b1c20434.zip |
| ✗ | Apple Watch Series 2 (42mm) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | cb4693d22745d0f43637c9c928fe4197ec745edd.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R364) | September 12, 2018 | 1.2 GiB | 6757116b4e53e11b0ca7971503d5a532a0e821de.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5283q) | June 5, 2018 | 1.2 GiB | d2e1a532182c1523a202b46824d4f771b8f12c3a.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5283r) | June 11, 2018 | 1.2 GiB | 2b2021f6be0f8ec0e7d88dbe7482e68ee178f0ce.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5303d) | June 19, 2018 | 1.2 GiB | 80807515407cbaab7342b338d678e066d20743a3.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5313d) | July 3, 2018 | 1.2 GiB | 3e39e1e4db9dcfa719531cf3bf79dc135bf22b10.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5322d) | July 17, 2018 | 1.2 GiB | 25d4f9c0da47eee4c9bcc88d26a784bdd815cd36.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5334f) | July 30, 2018 | 1.2 GiB | 7f9fa256d4d0df8b5b346f321e77c2f3f1f7c5e0.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5340g) | August 6, 2018 | 1.0 GiB | 43d6115978675fa7ea31d2e8e7816061c74e1cc7.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5349a) | August 13, 2018 | 1.0 GiB | 83e3631e20ccf130db20014413572a06d9ff373e.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5357a) | August 20, 2018 | 1.2 GiB | 887aa2cf5b346a6520d566b67517dc8987db14fd.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5360a) | August 24, 2018 | 1.2 GiB | e6fa2aade0f7ec7bcc280dfd107eb9ca596ea8a7.zip |
| ✗ | Apple Watch Series 2 (38mm) | watchOS 5.0 (16R5363a) | August 31, 2018 | 1.2 GiB | 24f0a668cd63f6548702f315ca5e032a32240835.zip |