Choose an OTA for the Apple Watch Series 4 (40mm)
OTA firmwares cannot be restored to. IPSW Downloads collects them for potential future use. They might also be useful if you're doing research.
Signed OTAs
| ✓ | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 260a231cd3886467771bd68acfae33a20fce2567.zip | Download |
| ✓ | watchOS 6.3.1 (17U224) | February 2, 2026 | 1.4 GiB | be32d69d3aa7c64ab7905055e760aebe4faba829.zip | Download |
| ✓ | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 03e2aea5b164ae7cd0649a228f166f85e1617094.zip | Download |
Unsigned OTAs
| ✗ | watchOS 6.3 (17U216) | January 26, 2021 | 1.4 GiB | 5e35b2a4354205dccbdbc58e2975d1dd7d7c3c24.zip | Download |
| ✗ | watchOS 5.3.8 (16U680) | July 15, 2020 | 1.3 GiB | 9acb94ff364f7b28e8e80a0a967aa0291ea284b2.zip | Download |
| ✗ | watchOS 5.3.7 (16U674) | May 18, 2020 | 1.3 GiB | 29fcf92ee6503a7a1999425ead6c2e32200c7709.zip | Download |
| ✗ | watchOS 5.3.6 (16U662) | March 24, 2020 | 1.3 GiB | d1d2c2320b76c11282a9d62d24c3797afba02fb8.zip | Download |
| ✗ | watchOS 5.3.5 (16U652) | February 18, 2020 | 1.3 GiB | 60354155fff1213c8eb8f51a375ec709a51e4a5c.zip | Download |
| ✗ | watchOS 5.3.4 (16U627) | December 10, 2019 | 1.3 GiB | e47845b9ea6f9c37083d83b42dc41bf286ee2ea6.zip | Download |
| ✗ | watchOS 6.1.1 (17S5433b) | November 5, 2019 | 1.4 GiB | 115d8c3e4f8e726e3548d82a880b756b26f33229.zip | Download |
| ✗ | watchOS 6.1 (17S5083a) | October 23, 2019 | 1.4 GiB | cee163b64e7a3311209294af76d044a59e3da5b4.zip | Download |
| ✗ | watchOS 5.3.3 (16U620) | October 29, 2019 | 1.3 GiB | 13686c2f3e6bc077da5381abd9cbe446b0d6fa8b.zip | Download |
| ✗ | watchOS 6.1 (17S5076a) | October 16, 2019 | 1.4 GiB | fb42725667486d84dfe31f5eb161d4a74a460016.zip | Download |
| ✗ | watchOS 6.1 (17S5068e) | October 10, 2019 | 1.4 GiB | 1520d44beced8d1995a4fdc3d64a7faab6b5fa44.zip | Download |
| ✗ | watchOS 6.1 (17S5059e) | October 2, 2019 | 1.4 GiB | 8cab09af2f924a9afe878dc5058ad6c0c52638c6.zip | Download |
| ✗ | watchOS 6.0.1 (17R605) | September 30, 2019 | 1.4 GiB | 28cf070e7d0e39e720154c576f355841d68bbf20.zip | Download |
| ✗ | watchOS 6.1 (17S5054e) | September 23, 2019 | 1.4 GiB | 4d4ff2b0c2c9fe515403f82c10eb3c4dcfc682c9.zip | Download |
| ✗ | watchOS 5.3.2 (16U611) | October 9, 2019 | 1.3 GiB | fbafa4a85e91d3cfe7e2fd60278aea80d0c8fff4.zip | Download |
| ✗ | watchOS 6.0 (17R575) | September 11, 2019 | 1.4 GiB | e7ff69fd5392c8f319923cb14fde2500001d7e46.zip | Download |
| ✗ | watchOS 6.0 (17R5575a) | August 27, 2019 | 1.4 GiB | 6a57bba90e0f7e1bc7e5e39540d8d983ee18b83d.zip | Download |
| ✗ | watchOS 5.3.1 (16U600) | August 26, 2019 | 1.3 GiB | 83f1a5e427cecd48119de3e87c08ea37899fb4c0.zip | Download |
| ✗ | watchOS 6.0 (17R5571a) | August 21, 2019 | 1.4 GiB | 7724f6401257b3a7408f2fbfcd4d7280ac451d1e.zip | Download |
| ✗ | watchOS 6.0 (17R5566a) | August 15, 2019 | 1.4 GiB | 80ee6b2db96ec58b6037e2dd48199fe36a0c6a6f.zip | Download |
| ✗ | watchOS 6.0 (17R5556d) | August 7, 2019 | 1.4 GiB | 2b42ba7d5880c0a99b0ad55d5d2f5a39281848b1.zip | Download |
| ✗ | watchOS 6.0 (17R5546f) | July 30, 2019 | 1.4 GiB | cd8b257eac112e136345bffb4dbdbc4b3287fe91.zip | Download |
| ✗ | watchOS 5.3 (16U569) | July 22, 2019 | 1.3 GiB | 21849453ae26c4caed6b227f0be5f02986a9152d.zip | Download |
| ✗ | watchOS 6.0 (17R5532f) | July 17, 2019 | 1.4 GiB | 9bccd37cfa5c62f7b8b3202051c131dc19ab0d1f.zip | Download |
| ✗ | watchOS 5.3 (16U5569a) | July 16, 2019 | 1.3 GiB | b707164101b9531cdfb0d09933215b5142ef01d3.zip | Download |
| ✗ | watchOS 5.3 (16U5566a) | July 9, 2019 | 1.3 GiB | 32baabbaa4e9636a04242906028b8ffdfee9becf.zip | Download |
| ✗ | watchOS 6.0 (17R5521e) | July 2, 2019 | 1.4 GiB | 21110cc88d59015a9ae6dd29a917b38632cd0a96.zip | Download |
| ✗ | watchOS 5.3 (16U5558b) | June 24, 2019 | 1.3 GiB | 619dd8fb28f75ee8d311ef7c827cbb760b48c13e.zip | Download |
| ✗ | watchOS 6.0 (17R5507l) | June 17, 2019 | 1.4 GiB | 00b15496dcff15c952d803b742c8e08fd2b552a2.zip | Download |
| ✗ | watchOS 5.3 (16U5545c) | June 11, 2019 | 1.3 GiB | 697944fbe41106eec7c165ce0eaabf5dedef05b5.zip | Download |
| ✗ | watchOS 6.0 (17R5491t) | June 3, 2019 | 1.4 GiB | a427b1a666ea759bb2fbcf4584156fc632bdb485.zip | Download |
| ✗ | watchOS 5.3 (16U5537b) | May 28, 2019 | 1.3 GiB | 32b6c4a0ca87ffadcb9c5a392625e3861d7c44a4.zip | Download |
| ✗ | watchOS 5.3 (16U5526f) | May 15, 2019 | 1.3 GiB | 680aff9cf9a126008bd929105dd0d0c867d81ec5.zip | Download |
| ✗ | watchOS 5.2.1 (16U113) | May 13, 2019 | 1.3 GiB | d7eb0dfb38f3afd706dc919442c771bb7d515f30.zip | Download |
| ✗ | watchOS 5.2.1 (16U5113a) | May 7, 2019 | 1.3 GiB | c303b6e7dd1075e4caf027c91ea1cd4d408eac12.zip | Download |
| ✗ | watchOS 5.2.1 (16U5110a) | April 29, 2019 | 1.3 GiB | 1d1d22a72bf770b38a9d138dcfd5edc78af267c5.zip | Download |
| ✗ | watchOS 5.2.1 (16U5101c) | April 22, 2019 | 1.3 GiB | 54767a5834932b2a050f1291baf6de81ba8c3ad3.zip | Download |
| ✗ | watchOS 5.2.1 (16U5091b) | April 8, 2019 | 1.3 GiB | 694602c6fc574c77b61a0f45d9f54e79248497e9.zip | Download |
| ✗ | watchOS 5.2.1 (16U5079d) | March 28, 2019 | 1.3 GiB | b069a58ed20583b04cb1f91c2a4415c01c3e6f0e.zip | Download |
| ✗ | watchOS 5.2 (16T225) | March 27, 2019 | 1.3 GiB | 533abba3d7f3a6bff3d7953d3ae50ae26de46be9.zip | Download |
| ✗ | watchOS 5.2 (16T5225a) | March 18, 2019 | 1.3 GiB | e01457318fcf872cf6c745fb86aa2bba4d60123f.zip | Download |
| ✗ | watchOS 5.2 (16T5222a) | March 11, 2019 | 1.3 GiB | 34c829e7e6baed9f4856824c8b78fa70bb4a4ab4.zip | Download |
| ✗ | watchOS 5.2 (16T5212e) | March 4, 2019 | 1.3 GiB | 875bb8ffe37b7ce8aaab1646b30ac6b2071931ad.zip | Download |
| ✗ | watchOS 5.2 (16T5201c) | February 19, 2019 | 1.3 GiB | e8d35b78bbacdc5737c2e9c978171f4733177239.zip | Download |
| ✗ | watchOS 5.2 (16T5191d) | February 4, 2019 | 1.3 GiB | 9618f2382ac8d21a6ec948d4d9aa674202e5fbf8.zip | Download |
| ✗ | watchOS 5.2 (16T5181f) | January 24, 2019 | 1.3 GiB | fb848b0e6fa114b52a1293b42a4617d63cf36853.zip | Download |
| ✗ | watchOS 5.1.3 (16S535) | January 22, 2019 | 1.3 GiB | 5efa1b9d556d98b509434625501094453740b165.zip | Download |
| ✗ | watchOS 5.1.3 (16S5535a) | January 7, 2019 | 1.3 GiB | 53c0ea7bd7f8d44d6ad442a05e9b44dac9e1eb74.zip | Download |
| ✗ | watchOS 5.1.3 (16S5531a) | December 19, 2018 | 1.3 GiB | c0f641772ff95c77f3f6c143ea30ed27abcd7d14.zip | Download |
| ✗ | watchOS 5.1.3 (16S5523a) | December 10, 2018 | 1.3 GiB | 6ca24d7715d907e0a136fe1db9fc1055d1ea7ea0.zip | Download |
| ✗ | watchOS 5.1.2 (16S46) | December 6, 2018 | 1.3 GiB | 987aa08f88531844ceeb788438d17d553b413afd.zip | Download |
| ✗ | watchOS 5.1.2 (16S5046a) | November 15, 2018 | 1.3 GiB | a677c740eebbd41f24ea31d68ccf0a7d2e0acf94.zip | Download |
| ✗ | watchOS 5.1.2 (16S5042a) | November 7, 2018 | 1.3 GiB | 64ed6d5ba1b2af6f1fe29f28c9b234c72be2da46.zip | Download |
| ✗ | watchOS 5.1.1 (16R600) | November 5, 2018 | 1.3 GiB | a2758f834979f19d02579890284de9967cf361e3.zip | Download |
| ✗ | watchOS 5.1 (16R591) | October 30, 2018 | 1.3 GiB | 93d1f8f6c15d8e9d50d5836218497dcb1b96d6ca.zip | Download |
| ✗ | watchOS 5.1 (16R5589c) | October 22, 2018 | 1.3 GiB | 3547c96155b115374dca8dddcf8faa101f343cbb.zip | Download |
| ✗ | watchOS 5.1 (16R5584a) | October 15, 2018 | 1.3 GiB | 44657e056d4bfdc5b69fa859e6b8991715a627b5.zip | Download |
| ✗ | watchOS 5.1 (16R5577c) | October 9, 2018 | 1.3 GiB | 98f28bcf15c7b0d98d1a156b203c075ea0f85c9e.zip | Download |
| ✗ | watchOS 5.1 (16R5568d) | October 2, 2018 | 1.3 GiB | 979f0dc4512b9054559960653cfbc347aeab9bd9.zip | Download |
| ✗ | watchOS 5.0.1 (16R382) | September 27, 2018 | 1.3 GiB | 15303a8ec977513e1a9543707eeb20d7df1db581.zip | Download |
| ✗ | watchOS 5.1 (16R5559d) | September 18, 2018 | 1.3 GiB | e98c88e2202495103cfee7652e3e8773fccc78cc.zip | Download |
| ✗ | watchOS 5.0 (16R364) | September 12, 2018 | 1.3 GiB | b9e41f94bac29c19a23dfb87be450b03d184a01e.zip | Download |
This page omits OTA downloads with version prerequisites. You can view these on this
API endpoint.