watchOS "1.0" and "1.0.1" are marketing versions; their true OS versions were 8.2 and 8.2.1, respectively. Since the OS version and marketing version now match as of watchOS 2.0, a fake OS version of 9.0 is specified for devices on watchOS 1.0 or 1.0.1 (watchOS 9.0 became reality in 2022).
| Version | Build | Prerequisite Version | Prerequisite Build | Compatibility Version | Release Date | Release Type | OTA Download URL | File Size | 
| 3.2 | 14V249 | N/A | 8 | 27 March 2017 | N/A | 7d788aca7cffbff00b4368ce93ad5f4f09450377.zip | 1,006,791,059 | 
| 8.2 | 12S507 | 8 | N/A | ab9e21ee25bde09f02a464597fb01d5ec8a7bff7.zip | 891,951,469 | 
| 8.2.1 | 12S632 | 8 | N/A | 348867a24800bd585d849a0bd630ac59a40f1407.zip | 874,622,032 | 
| 2.0 | 13S344 | 8 | N/A | 879410345c26241cd994bed1f6c16c72d7a8f90c.zip | 655,908,722 | 
| 2.0.1 | 13S428 | 8 | N/A | def72fc5a3a7c2c607b770e729f540d9b8b64d73.zip | 655,874,771 | 
| 2.1 | 13S661 | 8 | N/A | d167c05b73c4f2016b7ce4feda967eb9437be3f4.zip | 655,325,801 | 
| 2.2 | 13V144 | 8 | N/A | 6ab37e761072d854bd24e080bc072a06935111e7.zip | 648,283,996 | 
| 2.2.1 | 13V420 | 8 | N/A | 3030bf88758ab3a489eada389a96660cfecd3666.zip | 648,177,624 | 
| 2.2.2 | 13V604 | 8 | N/A | aa56c5379803145239ab4b25144acb7c11fdfa6e.zip | 648,201,103 | 
| 3.0 | 14S326 | 8 | N/A | 776130c621d92a5ea93d2b5cfcb189261e748d4f.zip | 289,421,729 | 
| 3.1 | 14S471 | 8 | N/A | db83a679c3edc64261b31359caf09dcbf0f74cd7.zip | 282,856,485 | 
| 14S500 | 8 | N/A | 2aa92f4b0cd9f8e9affdee1b6eb3465abeba66a9.zip | 282,855,015 | 
| 3.1.1 beta | 14S5862d | 8 | N/A | dd95b0e9201c6953f06602d5d50cd81c7f99da37.zip | 243,590,942 | 
| 3.1.1 beta 2 | 14S5869b | 8 | N/A | aefc36a4e12b445bf74370fd2210def52a77225f.zip | 241,874,972 | 
| 3.1.1 beta 3 | 14S5875b | 8 | N/A | 45a4b4324bc1bdf256b7477f2958d1538b52cc3b.zip | 236,999,881 | 
| 3.1.1 beta 4 | 14S879 | 8 | N/A | ec1b808fc02651d8e80a803df8d705f334236617.zip | 236,508,480 | 
| 3.1.1 | 14S883 | 8 | N/A | 75bf371ad66315f83342797b57b9ec87b721a65a.zip | 236,562,512 | 
| 3.1.3 beta | 14S958 | 8 | N/A | a59eaa1f41149b4fa42c03393787609ea99e5649.zip | 236,525,269 | 
| 3.1.3 beta 2 | 14S959 | 8 | N/A | 2d5fd0bc98911399c1d47b766f5aeadd12a551ac.zip | 236,508,073 | 
| 3.1.3 | 14S960 | 8 | N/A | 8dffd7fc91d5a568773268142f448c573317f819.zip | 236,507,771 | 
| 14V249[1] | 3.2 beta | 14V5205d | 8 | N/A | a0f0690896b9f072afc3e6eec97c43ed6259713a.zip | 102,995,232 | 
| 3.2 beta 2 | 14V5214d | 8 | N/A | c2ce80cd78275d275668743867920503b8f3b87a.zip | 79,130,198 | 
| 3.2 beta 3 | 14V5224d | 8 | N/A | 4fa2503fd0a8ffb3f9abde0ae726d512ed10505b.zip | 68,301,553 | 
| 3.2 beta 4 | 14V5235b | 8 | N/A | c7ef23d3c0ce611bdb9e6e34e7fbd1d747e6b595.zip | 29,043,638 | 
| 3.2 beta 5 | 14V5243a | 8 | N/A | 04767986ba8e7884f83ee1335ed09ab85dbc329d.zip | 28,450,289 | 
| 3.2 beta 6 | 14V5245a | 8 | N/A | a22a0b8a8b97f3fdea5c5dcb6ff8eb34b0ce2f9e.zip | 27,974,990 | 
| 3.2 beta 7 | 14V5249a | 8 | N/A | a6287b18bd20dcf9726a00e319c042bd0701329d.zip | 21,945,433 | 
| Version | Build | Prerequisite Version | Prerequisite Build | Compatibility Version | Release Date | Release Type | OTA Download URL | File Size | 
| 3.2 | 14V249 | N/A | 8 | 27 March 2017 | N/A | 5394e91ccbd59fcc59e4b4ae83d23e21ed496dfd.zip | 1,007,585,103 | 
| 8.2 | 12S507 | 8 | N/A | 2fd39225296f403049004a855a430bc810af7fab.zip | 889,814,653 | 
| 8.2.1 | 12S632 | 8 | N/A | 8c1eca83a8319c903cd553a9f1753cfc94a4ec51.zip | 872,565,487 | 
| 2.0 | 13S344 | 8 | N/A | 340a14669183ca04034997bf148010881a359147.zip | 656,166,333 | 
| 2.0.1 | 13S428 | 8 | N/A | 714d9d95be0e62b78ebf69004081488a23e60efe.zip | 656,140,075 | 
| 2.1 | 13S661 | 8 | N/A | 33f132dfe21d9f997084a12ac9d092957c9fce2b.zip | 655,454,394 | 
| 2.2 | 13V144 | 8 | N/A | cbd41753296eeae68c2a66795a1fe4ebeb5366a2.zip | 648,289,987 | 
| 2.2.1 | 13V420 | 8 | N/A | 9157d6ad4c968116b8e45cc17c8ea8e186cf4123.zip | 648,191,763 | 
| 2.2.2 | 13V604 | 8 | N/A | 0b31ac12a11f26e008a5cddcf252059169ff8d2b.zip | 648,205,153 | 
| 3.0 | 14S326 | 8 | N/A | d60659e318c518ec9833ada51aa947cb6676fa0a.zip | 289,685,927 | 
| 3.1 | 14S471 | 8 | N/A | 4fd8ef474fa05e41b71aae0a7bc9a2bd1a3737ed.zip | 283,078,239 | 
| 14S500 | 8 | N/A | 0b621cdd1c3072b9fa055cb0e46c502dbf4f08a4.zip | 283,078,011 | 
| 3.1.1 beta | 14S5862d | 8 | N/A | 0360de8f28c550bb140ad1669eb3747045152d7d.zip | 243,788,857 | 
| 3.1.1 beta 2 | 14S5869b | 8 | N/A | 5b41c65f3b3f1b1055a3a76ab7fcb7b13317c39b.zip | 242,065,694 | 
| 3.1.1 beta 3 | 14S5875b | 8 | N/A | dc8bae17854ae82fc3bcc7fe7d0bcc8bce46f461.zip | 237,200,697 | 
| 3.1.1 beta 4 | 14S879 | 8 | N/A | 7e7c6e5c8b76d7d1aabbf91c1799e38d579fe454.zip | 236,717,537 | 
| 3.1.1 | 14S883 | 8 | N/A | e7d8d9c99d3393f171f3005ab8f70af9d49d2419.zip | 236,767,220 | 
| 3.1.3 beta | 14S958 | 8 | N/A | 37f944cc0a441d46e69d7a18d8c986e0ca22d40a.zip | 236,734,200 | 
| 3.1.3 beta 2 | 14S959 | 8 | N/A | bf383e6fd3c195908365025780140ca37119d3ef.zip | 236,716,827 | 
| 3.1.3 | 14S960 | 8 | N/A | 1f98392fda85236135831135c00a6a2950ab7a5a.zip | 236,716,641 | 
| 14V249[1] | 3.2 beta | 14V5205d | 8 | N/A | 3b4168e75ec4c8938901ff34c85f5785d3774e16.zip | 102,997,238 | 
| 3.2 beta 2 | 14V5214d | 8 | N/A | 3c3dc4cd39eaae51cb1856442de9ee018f618fef.zip | 79,134,688 | 
| 3.2 beta 3 | 14V5224d | 8 | N/A | 77d98bc2bbfa97a902d0bbc721e5971956378d34.zip | 68,305,870 | 
| 3.2 beta 4 | 14V5235b | 8 | N/A | 78682a623b7ab37a497987e7edb40071f4395e7a.zip | 29,042,849 | 
| 3.2 beta 5 | 14V5243a | 8 | N/A | bbf17037413aaae56ad908e0549f4b1eee63d972.zip | 28,449,651 | 
| 3.2 beta 6 | 14V5245a | 8 | N/A | 011ebe5c7730367623a977ef59a444a640915a3c.zip | 27,974,363 | 
| 3.2 beta 7 | 14V5249a | 8 | N/A | 084b0722ce2ed89eb4f8c1968e6b2b26dd9a4216.zip | 21,944,582 | 
| Version | Build | Prerequisite Version | Prerequisite Build | Compatibility Version | Release Date | Release Type | OTA Download URL | File Size | 
| 3.2 | 14V249 | N/A | 8 | 27 March 2017 | N/A | ab1d6c3246320751044c3ddc08967f85b6aa8a72.zip | 1,023,018,521 | 
| 3.0 | 14S326 | 8 | N/A | 33ee3f5dde623cfed70ac63cdb644939b4c904ba.zip | 297,110,598 | 
| 3.1 | 14S471 | 8 | N/A | 297679fd2c6bb49ff34b60e6116e1c6f029a52e1.zip | 290,718,900 | 
| 14S500 | 8 | N/A | 6b58919bc926c3a3a8dd84206f9b31e1a8ed1ff9.zip | 290,717,780 | 
| 3.1.1 beta | 14S5862d | 8 | N/A | 870750f8b0b5879a991c7ded173c8c91b1f5a45f.zip | 251,018,876 | 
| 3.1.1 beta 2 | 14S5869b | 8 | N/A | e1916f958508d3f30e75b01467f75311d4ff0305.zip | 249,559,394 | 
| 3.1.1 beta 3 | 14S5875b | 8 | N/A | cbdbd077df575a276f052ef4be2be02a6087489f.zip | 244,415,820 | 
| 3.1.1 beta 4 | 14S879 | 8 | N/A | 95f0cc3203d5d7458109433e2e4aec986df079f7.zip | 244,005,054 | 
| 3.1.1 | 14S883 | 8 | N/A | 0c547ba7159093655a41ba78812405eceef2b9ba.zip | 244,010,079 | 
| 3.1.3 beta | 14S958 | 8 | N/A | dc75e6a282e71dd2cd2fc03ae11a89f5f04d49a9.zip | 244,027,053 | 
| 3.1.3 beta 2 | 14S959 | 8 | N/A | 54b49c015b629504a8d7b875b9c703b64b764e4c.zip | 244,009,954 | 
| 3.1.3 | 14S960 | 8 | N/A | f4149b41522623f51e31ab17f9d9653c6ac4e7f9.zip | 244,009,491 | 
| 14V249[1] | 3.2 beta | 14V5205d | 8 | N/A | f513e3ac0cc03cac7b7fae58ce37ddbcaed74dcb.zip | 108,898,314 | 
| 3.2 beta 2 | 14V5214d | 8 | N/A | fb04ba1fb64eff2ffd33b87448673ef02f32caa4.zip | 84,589,953 | 
| 3.2 beta 3 | 14V5224d | 8 | N/A | d1d79d06191123d063c94a444488d344c6a2afce.zip | 73,816,327 | 
| 3.2 beta 4 | 14V5235b | 8 | N/A | 4831d3daff7b9ddf48dde564ab315b0fa81fee8d.zip | 35,147,066 | 
| 3.2 beta 5 | 14V5243a | 8 | N/A | 2848fe9b1b2ab285509328fbb02dfa889a138d34.zip | 34,556,560 | 
| 3.2 beta 6 | 14V5245a | 8 | N/A | 0343ec95e8ed39584c360e8e9d0cf32b4422807b.zip | 34,034,012 | 
| 3.2 beta 7 | 14V5249a | 8 | N/A | e2c70ff88e5f7457775f2c48b2fab14e974e9c12.zip | 26,996,530 | 
| Version | Build | Prerequisite Version | Prerequisite Build | Compatibility Version | Release Date | Release Type | OTA Download URL | File Size | 
| 3.2 | 14V249 | N/A | 8 | 27 March 2017 | N/A | 878312ad7def27ba7b63fe8e877d2e5814a2e8e9.zip | 1,023,878,310 | 
| 3.0 | 14S326 | 8 | N/A | 90fb4b316b890e9bcb8c5ff7a2e8b7678acf7fee.zip | 297,279,737 | 
| 3.1 | 14S471 | 8 | N/A | 8a630d91998086faefcdf92d68e2e2313c9c29b5.zip | 290,917,369 | 
| 3.1.1 beta Pre-release | 14S500 | 8 | N/A | c84de5f77ccdf1c6b45b1deb1617cfbf96eb64ad.zip | 290,916,022 | 
| 3.1.1 beta | 14S5862d | 8 | N/A | 152a5243b5bb3ae5f0d1bb579ea6ca3d5200d4ee.zip | 251,191,048 | 
| 3.1.1 beta 2 | 14S5869b | 8 | N/A | 9f82af6e3a8023f41f2e560620eda4252c2088b4.zip | 249,743,483 | 
| 3.1.1 beta 3 | 14S5875b | 8 | N/A | 03bec4bbd3a9c4cccf88059467e176a7bbe221b5.zip | 244,586,483 | 
| 3.1.1 beta 4 | 14S879 | 8 | N/A | b1942a65645e928ea17a9cc092fc6f9c84b27026.zip | 244,184,954 | 
| 3.1.1 | 14S883 | 8 | N/A | 28309df0721bd6ae7a3265863d9286e807b0b06b.zip | 244,192,397 | 
| 3.1.3 beta | 14S958 | 8 | N/A | f81100f5e56c5819ed5c1fc45dac0af1190f4078.zip | 244,207,164 | 
| 3.1.3 beta 2 | 14S959 | 8 | N/A | 70d07a563ce9d0cf88a4678b057180b2a234479d.zip | 244,189,612 | 
| 3.1.3 | 14S960 | 8 | N/A | d0707d1635ad663e3e4274e9456fe6388386ee28.zip | 244,189,172 | 
| 14V249[1] | 3.2 beta | 14V5205d | 8 | N/A | d20d798e99bb14ad92ca71a5e2883a1714e1cd17.zip | 108,888,723 | 
| 3.2 beta 2 | 14V5214d | 8 | N/A | 97503af44208c6b70050214436fda93cf28b13bf.zip | 84,576,290 | 
| 3.2 beta 3 | 14V5224d | 8 | N/A | 6ad63141831409aaa25bf6e61c1d307cf4351d81.zip | 73,800,927 | 
| 3.2 beta 4 | 14V5235b | 8 | N/A | 3a65ebd68f0da6ef357aa9fec16e31fadb390810.zip | 35,129,750 | 
| 3.2 beta 5 | 14V5243a | 8 | N/A | f0385e4134ce4fb4fad719df2cf4d2fc2a621da1.zip | 34,539,353 | 
| 3.2 beta 6 | 14V5245a | 8 | N/A | db334c4fc709c469e6723faa01d5db5ff45310ee.zip | 34,016,593 | 
| 3.2 beta 7 | 14V5249a | 8 | N/A | 4381a767fe0fb10b9322195e1b322e6f2115e5a1.zip | 26,979,737 | 
| Version | Build | Prerequisite Version | Prerequisite Build | Compatibility Version | Release Date | Release Type | OTA Download URL | File Size | 
| 3.2 | 14V249 | N/A | 8 | 27 March 2017 | N/A | 93ef535e9a88f9c5706e404c0ddff2dd99a899f6.zip | 1,024,262,880 | 
| 3.0 | 14S326 | 8 | N/A | 0b1c003102d8c26aa328bbacde2dc4619bcb173e.zip | 298,147,008 | 
| 3.1 | 14S471 | 8 | N/A | 71bd503adee411ba1bbb3ba78c7f02e57c118e4a.zip | 291,748,506 | 
| 3.1.1 beta Pre-release | 14S500 | 8 | N/A | aaab5465b9a97f7d0922a3d9cfd73428fee019d5.zip | 291,747,261 | 
| 3.1.1 beta | 14S5862d | 8 | N/A | cba0f297c8e23ae0f025dcd2ca473fffa7f91622.zip | 252,033,117 | 
| 3.1.1 beta 2 | 14S5869b | 8 | N/A | 8a51d567f432f234a9392dbbe8fa9a5878bd993e.zip | 250,558,003 | 
| 3.1.1 beta 3 | 14S5875b | 8 | N/A | 67d4068b34cfc083e23f94d5d53ead859cf80344.zip | 245,416,108 | 
| 3.1.1 beta 4 | 14S879 | 8 | N/A | e405f59de5ba3383f7962baba0db127ad22740c9.zip | 244,997,288 | 
| 3.1.1 | 14S883 | 8 | N/A | 5a3a7475c12bf6ac060335ac7af53f6fad7913d2.zip | 245,003,544 | 
| 3.1.3 beta | 14S958 | 8 | N/A | 8a1be970565c781b916d4fee1acbb376b3c6e3c1.zip | 245,019,587 | 
| 3.1.3 beta 2 | 14S959 | 8 | N/A | 02da93d38fd9f0cdf49537a14216393508fde424.zip | 245,001,989 | 
| 3.1.3 | 14S960 | 8 | N/A | a27a9493869d463c427324c302085fbf294f4d91.zip | 245,001,749 | 
| 14V249[1] | 3.2 beta | 14V5205d | 8 | N/A | 134bfc7e5c17a86e5927ad7e39925f39ac4b13d2.zip | 109,902,353 | 
| 3.2 beta 2 | 14V5214d | 8 | N/A | 83353ce0832666ca528a9f8d6ecde4474990adce.zip | 85,555,095 | 
| 3.2 beta 3 | 14V5224d | 8 | N/A | 8bc13c71ec49d5ebd1f68ffbfe33afa22027cf93.zip | 74,791,932 | 
| 3.2 beta 4 | 14V5235b | 8 | N/A | a6c2cb99c21f3f89b7f0ec06ab305b9eb3a02fc4.zip | 36,122,081 | 
| 3.2 beta 5 | 14V5243a | 8 | N/A | b35ab6e359817ad41f5f17f317539d389d477a01.zip | 35,531,483 | 
| 3.2 beta 6 | 14V5245a | 8 | N/A | 9851a4edaa46f10903fa31863a72949b4376774e.zip | 34,952,467 | 
| 3.2 beta 7 | 14V5249a | 8 | N/A | 57625096903b8a670dbacb55abba44398b0f9fda.zip | 27,934,485 | 
| Version | Build | Prerequisite Version | Prerequisite Build | Compatibility Version | Release Date | Release Type | OTA Download URL | File Size | 
| 3.2 | 14V249 | N/A | 8 | 27 March 2017 | N/A | 3ee5f89714713b3f78bdc9a033268aa9c87698d2.zip | 1,025,061,696 | 
| 3.0 | 14S326 | 8 | N/A | 299da10b0217121ec85268d916b31396561b0fd5.zip | 298,323,424 | 
| 3.1 | 14S471 | 8 | N/A | cc9006c5eaf683f12f47821698ec114f96483e77.zip | 291,956,010 | 
| 3.1.1 beta Pre-release | 14S500 | 8 | N/A | 882af55fb966af09625870ac0749e3df3330013e.zip | 291,955,454 | 
| 3.1.1 beta | 14S5862d | 8 | N/A | f76f5caac7b6e160eadf6cf862e3710bea962ca8.zip | 252,215,387 | 
| 3.1.1 beta 2 | 14S5869b | 8 | N/A | 8949e238c368a5e3a6dd0a2477f69039f31acecb.zip | 250,743,320 | 
| 3.1.1 beta 3 | 14S5875b | 8 | N/A | 50c9202b861327b22bf28439044d93836ae18272.zip | 245,600,548 | 
| 3.1.1 beta 4 | 14S879 | 8 | N/A | e4f332c466b5552b225a5f7043dbdee46a4160e6.zip | 245,184,881 | 
| 3.1.1 | 14S883 | 8 | N/A | 7d57855170f0110bf912a636ecb53790e943a0ab.zip | 245,194,148 | 
| 3.1.3 beta | 14S958 | 8 | N/A | ad761854e7879fbc6e7cdc748c8bbb89f7fc50b8.zip | 245,207,075 | 
| 3.1.3 beta 2 | 14S959 | 8 | N/A | 25b762f73e02176a0b84a43bd45631ca4cc7575d.zip | 245,189,631 | 
| 3.1.3 | 14S960 | 8 | N/A | 851765b73746a19bbd62b759944857406d75fee8.zip | 245,189,413 | 
| 14V249[1] | 3.2 beta | 14V5205d | 8 | N/A | 92893272b61631d9c60d416ffc59cb18a1f251a2.zip | 109,901,609 | 
| 3.2 beta 2 | 14V5214d | 8 | N/A | 4a50eae736579380089674ff58909f5743d76fe1.zip | 85,540,531 | 
| 3.2 beta 3 | 14V5224d | 8 | N/A | 393696c675dd671e3e5f4a02b6d3761bce922306.zip | 74,776,508 | 
| 3.2 beta 4 | 14V5235b | 8 | N/A | 724ee1a25f534233bdd511fa7c45dffb16d4f3f4.zip | 36,105,682 | 
| 3.2 beta 5 | 14V5243a | 8 | N/A | 409a5bb99cd3a3f5150411d7cc1ede641db7ff23.zip | 35,515,228 | 
| 3.2 beta 6 | 14V5245a | 8 | N/A | 6b9149b76f14282809a137a2e13fd7c7c386f26c.zip | 34,935,792 | 
| 3.2 beta 7 | 14V5249a | 8 | N/A | 6b039138525cbac0c529770a8f738c858d021b9b.zip | 27,917,902 | 
Notes
- ^ a b c d e f Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 14S326 was listed as 14S5326.) The listings on this page use the build number displayed on the device.