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OTA Updates/Apple Watch/6.3

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Apple Watch Series 1

Watch2,6

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U208[1] 6.2.8 beta 17U5535e 14 14 December 2020 N/A 01cf05383f29f2b3595e2b5d27eb7ba3d19c2ad6.zip 128,909,932
6.2.8 beta 2 17U5545c 14 N/A 67a02fbda1375beb79b22291f35bf0d914c1c667.zip 127,107,173
6.2.8 beta 3 17U5559d 14 N/A d01c80f8c5b5aa1b82f7d6c503435bcb5dee4855.zip 102,619,076
17U208 N/A 14 N/A 916c7c381f6173bff2a8ebec8fe5539cc8dde8dc.zip 1,457,454,661
5.3.6 16U662 14 N/A 46ddc9741a22ae642c787fe1128e73040d90c262.zip 787,773,098
5.3.7 16U674 14 N/A e45e679c84858953e1a32eec9b89cec5726d2ac5.zip 787,779,940
5.3.8 16U680 14 N/A 0842f30a48f919c20be41c496724017a89ec2033.zip 787,792,922
5.3.9 16U693 14 N/A 6387866474ea5111cc6b311d4cacfc0ae6df430c.zip 787,786,416
6.1 17S84 14 N/A 2f60f040cdb09b6b327761780b732f262ea1c21b.zip 482,438,035
6.1.1 17S449 14 N/A d9a320bf97cfa86cdcbb7f5b88aae83d743407c6.zip 471,152,683
6.1.2 17S796 14 N/A edef379ed535ea44b9aa152f4d9b6ad5944aa0e0.zip 469,148,640
6.1.3 17S811 14 N/A 9301d2a050843e2caad4517f4843731c9eb4ff8f.zip 469,150,980
6.2 beta 17T5224g 14 N/A b8908877b481cb41b6428d684a6a66eb81482cde.zip 227,116,215
6.2 beta 2 17T5234f 14 N/A 8b76e1353001a8e3e7a7b3a5533bb9d71ca6776a.zip 210,436,498
6.2 beta 3 17T5244c 14 N/A ed22b3357eb4fdf8058a0e0374458ab38dc2b8bd.zip 184,009,663
6.2 beta 4 17T5251a 14 N/A 226fe0894d71dbc9d689cae3c6408cbe9e511982.zip 182,997,820
6.2 beta 5 17T5254a 14 N/A 1c14c61b80f7ad6e2b1a0ac04ae28c1e74ddbd12.zip 182,995,730
6.2 17T529 14 N/A 4a77be92b50f838bd684b039d5bb7607129adfcc.zip 178,253,711
6.2.1 17T530 14 N/A a7b8adf1a6b6633d607e7b549be57a24a6c6534f.zip 178,442,428
6.2.5 beta 17T5580e 14 N/A fb52337c72e2eda33c0805b851f52d602fec4ebc.zip 154,497,877
6.2.5 beta 2 17T5590d 14 N/A 0a6fe11effc15e898d5d7d9f7e5acb7ebbb73ad4.zip 139,985,490
6.2.5 beta 3 17T5600c 14 N/A a89abee51c9be7092ac8672980076011aba4bc28.zip 133,148,207
6.2.5 beta 4 17T5607a 14 N/A 845fc3619c29d8af79241d211c0445de69ea6333.zip 132,008,483
6.2.5 17T608 14 N/A 9cf2057a70c90a7e610b43daeedeac69b2c4bead.zip 127,728,486
6.2.6 17T620 14 N/A bce9829cad502219c5560e93efa230932a8abdd4.zip 127,712,805
6.2.8 17U63 14 N/A abc073a3ea0c67d6b8c395b5322b8e75a961c9d4.zip 61,524,501
6.2.9 17U203 14 N/A b4765aa6399ca5c5594f73dade5f8050967d79a5.zip 60,809,756

Watch2,7

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U208[1] 6.2.8 beta 17U5535e 14 14 December 2020 N/A 4277bf5ffc65bb70cf1a7533fd99cc5fa8ba8486.zip 128,936,365
6.2.8 beta 2 17U5545c 14 N/A c3dd918c86a5666f669092174179b9f0686c5b54.zip 127,133,869
6.2.8 beta 3 17U5559d 14 N/A b799b9df506e5e4a3a7c49c27ed6330046e3d2a5.zip 102,645,865
17U208 N/A 14 N/A 501b410e3bce7cf5b3743bb9349acb74d8e773e5.zip 1,466,365,043
5.3.6 16U662 14 N/A 52af6e7663fda502f3cd5529375481edda99136d.zip 790,733,778
5.3.7 16U674 14 N/A 036179fd377f78d5f68d98b55a5f9d913c22e299.zip 790,736,808
5.3.8 16U680 14 N/A 401f2ab46bbb383ed3a75db5ed640bda7d53428f.zip 790,753,084
5.3.9 16U693 14 N/A 72df788a0d87749cebda71199b03b0b9fd544573.zip 790,748,130
6.1 17S84 14 N/A cf21783ff796026534a174eda99341ae8ee13666.zip 482,273,720
6.1.1 17S449 14 N/A 29ecfeb8b1b01d3ce3c55d878b9301c2ff227068.zip 470,997,978
6.1.2 17S796 14 N/A 69603e8db573e17ea71bedc83b12bf3188e497ea.zip 468,986,378
6.1.3 17S811 14 N/A 9983c39d4c190cc604f00e1e590acc5eb2623e92.zip 468,987,508
6.2 beta 17T5224g 14 N/A aee6cf48dac14df0249956055c47b1eba1323b4d.zip 227,148,005
6.2 beta 2 17T5234f 14 N/A bb690d9646c06be0146af13ccc2aa0a2e519060d.zip 210,465,165
6.2 beta 3 17T5244c 14 N/A d1dce181b97f672aa0ec5748d64a2068bd3a852f.zip 184,040,672
6.2 beta 4 17T5251a 14 N/A 3acea0a7267bf4fee26329444a0aa174f363ab8b.zip 183,027,984
6.2 beta 5 17T5254a 14 N/A cb1584ce9a5a075b44cc566ca116cb447e1a2158.zip 183,024,376
6.2 17T529 14 N/A aed2ea604cac79d44f2e41e6de883aef0d24959c.zip 178,278,455
6.2.1 17T530 14 N/A 7750d08bacc32a2765b8930a51a88c32993278d7.zip 178,466,517
6.2.5 beta 17T5580e 14 N/A 603381e97ac0d8e2c13aa035e358c4ca977fa1dc.zip 154,525,734
6.2.5 beta 2 17T5590d 14 N/A 9a69791a83da59d9cb4eb28a148a43fb7eee9de0.zip 140,027,076
6.2.5 beta 3 17T5600c 14 N/A 1952f5680bc708df02a86137ebe63092920eb78e.zip 133,185,620
6.2.5 beta 4 17T5607a 14 N/A 3abb5373d1dd0d89a0703822924ad93a2c5d5ba5.zip 132,035,668
6.2.5 17T608 14 N/A aacff173a12ea39b6c4264dfba9c71c420f23188.zip 127,749,763
6.2.6 17T620 14 N/A 3d55b70b28a1436af0ae597c55fee9e0f265c85b.zip 127,737,594
6.2.8 17U63 14 N/A 84febc1ec00c42eefd032cf4240270135bb4531f.zip 61,537,421
6.2.9 17U203 14 N/A 01c963531879b01f292363437287d7d3a9eb11b8.zip 60,822,442

Apple Watch Series 2

Watch2,3

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U208[1] 6.2.8 beta 17U5535e 14 14 December 2020 N/A 4d6473b3dd5fd7b9e37050345526f5e4f195c50a.zip 129,795,742
6.2.8 beta 2 17U5545c 14 N/A 87caa14fb4ebb5886ae4becdfbc2582ccdd3b045.zip 127,992,654
6.2.8 beta 3 17U5559d 14 N/A c0e4aabbc9788421544745608d8a96248593e040.zip 103,504,951
17U208 N/A 14 N/A 644cbbdc723ec9111df287eb7e617a87f765f144.zip 1,458,340,559
5.3.6 16U662 14 N/A b3fd0e90777d14cac32213e6e30a5a1f3228dbfa.zip 788,659,121
5.3.7 16U674 14 N/A 117ea078e9da33fd0ef942eb6a0de7de4dd5335d.zip 788,665,732
5.3.8 16U680 14 N/A fd6234ee25a6a36ce4be704e96a02861b65439ab.zip 788,678,898
5.3.9 16U693 14 N/A 96a7418019b5ebbf23315d1abd28d511d9675a94.zip 788,671,977
6.1 17S84 14 N/A da4037a4a0ef21c5dd2d0d7ffaf7063d1119db83.zip 483,324,385
6.1.1 17S449 14 N/A 2c83e75bfa9012c233e1135c792ec1264b8c1e5e.zip 472,038,361
6.1.2 17S796 14 N/A 18cff07ab86a50ea56f07928bc1f43ceabf2b978.zip 470,035,084
6.1.3 17S811 14 N/A 662115443ddb8482458e3d78b9c75a07a10ce617.zip 470,036,613
6.2 beta 17T5224g 14 N/A 59aad9f7a7e2f58ec83b5e3e1ae3584b1831beb5.zip 228,002,775
6.2 beta 2 17T5234f 14 N/A 08b5c8d855a60e6a4c0fb01d9a64c6e1f5c6f188.zip 211,321,502
6.2 beta 3 17T5244c 14 N/A a2ddb3b13eab4f58c204f652b628f78fc097b4f5.zip 184,895,461
6.2 beta 4 17T5251a 14 N/A dcecf6b8c8b599ae362a9eb011a3b8e89b369554.zip 183,884,157
6.2 beta 5 17T5254a 14 N/A e297d02a0533ef09cbb95e939d01b84871ba31c4.zip 183,881,636
6.2 17T529 14 N/A 8877b40a64a4e0477e45012e5601af36762c2875.zip 179,139,231
6.2.1 17T530 14 N/A 65b8a769771d00f1c8bfca43185fa315c270a4f6.zip 179,329,046
6.2.5 beta 17T5580e 14 N/A cfbf3ee54e6685d5b441d8817efaa1b33e6a8455.zip 155,383,440
6.2.5 beta 2 17T5590d 14 N/A 542301db9e1ceafdcdce872b389f6ef27b7691b2.zip 140,870,984
6.2.5 beta 3 17T5600c 14 N/A a49cd5ec258e4ba133419ddfb1ca4770391d9dba.zip 134,034,176
6.2.5 beta 4 17T5607a 14 N/A 717f0485f1766201967e7126ed806cc556527aab.zip 132,894,040
6.2.5 17T608 14 N/A 8e2bf5d96fff884ae8d0e725372238ccc1f3f756.zip 128,614,866
6.2.6 17T620 14 N/A ae30723fb266a02d4c8daa6c365ea43659bdf42f.zip 128,598,150
6.2.8 17U63 14 N/A ff9876662477305ed91534eb4195810d812b8dd2.zip 62,410,186
6.2.9 17U203 14 N/A a1944da972ec3125ed6658ddda95b10331f37f78.zip 61,695,014

Watch2,4

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U208[1] 6.2.8 beta 17U5535e 14 14 December 2020 N/A 12657be9791bc83428ca977ac20ec7e69d9149bf.zip 129,823,474
6.2.8 beta 2 17U5545c 14 N/A e1409c1e7e29ec636be0b3d7e29e210aa82b60a7.zip 128,020,673
6.2.8 beta 3 17U5559d 14 N/A b8f5819b5a86cbcc889608a0e2c5b5672fb3a9ea.zip 103,532,318
17U208 N/A 14 N/A 892a5a68940290978a24f2a9e06aacdad61ef923.zip 1,467,251,647
5.3.6 16U662 14 N/A 8b9e7510cc314960ca9d9c39e3a4e643d46099ab.zip 791,620,239
5.3.7 16U674 14 N/A da50629b98b394b7cfdd51a58eaffa3f32db685f.zip 791,623,443
5.3.8 16U680 14 N/A 992e31d2c477d45ceaf794a539946c7473aac849.zip 791,639,319
5.3.9 16U693 14 N/A abee63eca24b98fed28ab8094ff3d717f3adcfb5.zip 791,634,089
6.1 17S84 14 N/A 16106359585aee070df1bdfd7d6326008018bca0.zip 483,161,336
6.1.1 17S449 14 N/A f0dde5de1e7cf15eda9594975f63666cf1dbfaae.zip 471,884,383
6.1.2 17S796 14 N/A b05125eb1abf0d1c9e4b24d8efe2d89f861d1d2c.zip 469,872,857
6.1.3 17S811 14 N/A 40b2d8fbe3d5e0a43da0c70e8dfaabf0bc9bb454.zip 469,874,233
6.2 beta 17T5224g 14 N/A 96b2169e2886159612ab5cb756faf2e5e5b7a335.zip 228,034,650
6.2 beta 2 17T5234f 14 N/A 2716b4d9665ef0791d979c8d856e9842b3450fd6.zip 211,351,799
6.2 beta 3 17T5244c 14 N/A 826d4fda8b55e9e9a53e2be2bb59f80e1db7415f.zip 184,927,220
6.2 beta 4 17T5251a 14 N/A f9f130193892934c85ca4fdc8102fe7258e40745.zip 183,914,164
6.2 beta 5 17T5254a 14 N/A 082a147084b360e9236530f46a1e9442d59d8d96.zip 183,911,219
6.2 17T529 14 N/A e5af9d8fe5ffe20528ac52fb0ea100db8e4a414e.zip 179,164,775
6.2.1 17T530 14 N/A 3c2da7640590b1f6023a80178181b6061a5cac05.zip 179,353,314
6.2.5 beta 17T5580e 14 N/A 34d6787f822e929b406ecb425e6ee2c76dfa65e5.zip 155,411,861
6.2.5 beta 2 17T5590d 14 N/A 8a4fdafbf113c225c88f873bc100d5681a020f3f.zip 140,913,392
6.2.5 beta 3 17T5600c 14 N/A 2243c39238eb86ba15d8c56a2892472b78b93c2f.zip 134,072,334
6.2.5 beta 4 17T5607a 14 N/A e38a48157e11e1eb9920f13246babe9422a4d163.zip 132,921,754
6.2.5 17T608 14 N/A 1564a8f00a61d6d228a1deaf0d84079e49c882cb.zip 128,636,554
6.2.6 17T620 14 N/A 82feee8883ee3623b44de30ce2e69fba9b5f7b18.zip 128,624,066
6.2.8 17U63 14 N/A 38e503cea9d8c4326fd12db41344e13a423c1e08.zip 62,423,999
6.2.9 17U203 14 N/A 2e41fc8596ce55d10343d276ba36355ab84ce287.zip 61,708,290

Apple Watch Series 3

Watch3,1

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A cba42384fea456b333e026bb87edc02389c5bb57.zip 1,546,033,586
6.0 17R575 14 N/A e032fc38e9d4b3cbe27569f1e0fc33b330e2c2b8.zip 665,584,621
6.0.1 17R604 14 N/A fc98eef64fe2a04c4d670357f19912aa6b017628.zip 665,617,034
6.1 17S84 14 N/A d129bc1c68d8a6ce7b42345dd07e5338af38e607.zip 540,612,064
6.1.1 17S449 14 N/A 31c2d1c65b969b12fef368bbeb3194fcebade3de.zip 529,090,788
6.1.2 17S796 14 N/A 1dffaa8f286161ab264f6ad6fb8b74f1ca83d436.zip 527,145,138
6.1.3 17S811 14 N/A 1d03da3a20ce731cafc245f201cb52d044a385fe.zip 527,144,548
6.2 17T529 14 N/A b2a10420f94621022bda19658a58a3082e300baa.zip 229,792,554
6.2.1 17T530 14 N/A a94e048a5bd81f5f81423976231af0761cd1a35e.zip 229,841,881
6.2.5 17T608 14 N/A bf49853430af00be8f0b6550504691650d50bdef.zip 178,983,378
6.2.6 17T620 14 N/A ef212a56b9c91e7c86b13444cd45a05054a5ebe3.zip 178,965,278
6.2.8 17U63 14 N/A babb7c4bd4ea895fbf07ccde033437c6447cf004.zip 90,981,249

Watch3,2

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 9e53a719b53e5b3206bf81f17df2116ae62d0341.zip 1,555,654,603
6.0 17R575 14 N/A b64d6232d026654b13ce20987fb02e78325a88ea.zip 665,409,866
6.0.1 17R604 14 N/A c25123af42a2ae14d26e55e2a5436dc55dcf6972.zip 665,438,908
6.1 17S84 14 N/A 6a786fb1c33a8836c10ee21548d4b2bd5ed7f7b1.zip 540,479,014
6.1.1 17S449 14 N/A 5f94656c1eb719c1aee22cb6f9853fcfab4df55f.zip 528,909,665
6.1.2 17S796 14 N/A fb34505e34f81e9c86e51a6fa75839cc3e6509d4.zip 526,987,580
6.1.3 17S811 14 N/A 36d9e8cb2872ed0cd3e8430938138984c361097e.zip 526,984,714
6.2 17T529 14 N/A 859f036050c4d210c3bb90c59acf98c14a4e1bf0.zip 229,818,360
6.2.1 17T530 14 N/A 687ef70ebaee6033117a9e80e7de2802cb9265ca.zip 229,874,587
6.2.5 17T608 14 N/A b88e77b39c0645d12a13dae1fb63764db1ec4581.zip 179,013,344
6.2.6 17T620 14 N/A 0e5c25f03becec62572e61165f0a01d2c9be1bdf.zip 178,997,472
6.2.8 17U63 14 N/A bbe83d9696006505d2e020b93578264107b822b6.zip 91,006,681

Watch3,3

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 09767515de464388db188e19ff7852b3aabef707.zip 1,480,358,905
6.0 17R575 14 N/A dd735332dc962f38b7f6cf96aa010b3dde8901d7.zip 630,498,737
6.0.1 17R604 14 N/A 3a51a8a8f7a585f7318052faa88bdfcd9f6eb6ca.zip 630,485,251
6.1 17S84 14 N/A 2924bbdd3f740f246e14066523a9ca1abb7838ae.zip 505,102,052
6.1.1 17S449 14 N/A b1b945d6f5db55890eaebefbaca8925fba2c5f55.zip 493,737,461
6.1.2 17S796 14 N/A ea62e17bdd6b954dd3527bf4ee44b4037b552e80.zip 491,729,232
6.1.3 17S811 14 N/A 1a8ab3609cc7103a246ed94aba95c743d02a8f23.zip 491,727,372
6.2 17T529 14 N/A 1f1fd9cb282869ecbdcdc5d307e53ef4f2600e3c.zip 200,686,127
6.2.1 17T530 14 N/A e5dc9b0aeca8c610537f85aded415f3871ec54ba.zip 200,868,612
6.2.5 17T608 14 N/A 94a285caf2f72d39896fe68966e115545c61785d.zip 150,118,889
6.2.6 17T620 14 N/A a98843ac11bf9a50111505b8834d052f173ee47a.zip 150,106,706
6.2.8 17U63 14 N/A 94006f0c0dcf2983811f9dd22da3f5b044697015.zip 83,909,655

Watch3,4

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A c8614502b96123c4c50a51cb8cd50c97be39a506.zip 1,489,403,159
6.0 17R575 14 N/A 28838ed936a02585174530c199950a7fc02909cd.zip 630,312,381
6.0.1 17R604 14 N/A 1e407c6e33c95ee912ec621cfc346096760e202c.zip 630,302,046
6.1 17S84 14 N/A bc2e9ea601f43031c4b1779e4a979d485110cd35.zip 504,940,902
6.1.1 17S449 14 N/A 0f07bd76c1bdf38a3a87d99f635ffb84f92c8aeb.zip 493,579,829
6.1.2 17S796 14 N/A e01bcf840ecf599dba6ae0da2fa9dd66da69dc80.zip 491,567,542
6.1.3 17S811 14 N/A 1173d3a2c305f4302f744b2e41b17d6fbf6d5d7e.zip 491,569,347
6.2 17T529 14 N/A f55b1a721a7181ae67585eed96d6fd1fe275f4ff.zip 200,717,532
6.2.1 17T530 14 N/A ea0e40fdc292c10ad74df5a306d42b031a832821.zip 200,900,356
6.2.5 17T608 14 N/A 9564a999e21b70b1c6cc35672b3da5b6cb6559b7.zip 150,147,313
6.2.6 17T620 14 N/A 2e6cf2d902d3357a98d02b6d631f6eff3bd7873e.zip 150,133,577
6.2.8 17U63 14 N/A 889fcfc3c51381bd89a8820ef47c6621e4ccb9f8.zip 83,937,806

Apple Watch Series 4

Watch4,1

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 5e35b2a4354205dccbdbc58e2975d1dd7d7c3c24.zip 1,505,710,765
6.0 17R575 14 N/A b2bc245346b87728ece7646486c7dc6f9a4770c4.zip 584,082,619
6.0.1 17R604 14 N/A 5e09e103e48cde05721ac3aee21551f3ad4c1f10.zip 584,072,138
6.1 17S84 14 N/A de2265d0c84ce6c6471bd0f75375eb05e966c150.zip 456,719,570
6.1.1 17S449 14 N/A 41c2ccacb6e2b01729d79c5acdef7180ec681285.zip 445,392,447
6.1.2 17S796 14 N/A 499c5df29414503227b85cb8dea031aa722bb4ae.zip 443,324,362
6.1.3 17S811 14 N/A f556d9d82d5c040dee11f3b7c961ef2f33f4c478.zip 443,322,878
6.2 17T529 14 N/A d6d0073aae93bedd0e5e0da625b8dd1096600ca9.zip 182,072,237
6.2.1 17T530 14 N/A 866572245f96298de80aaad17ff145ce8ce21623.zip 182,088,671
6.2.5 17T608 14 N/A dfab4e768a2b955f58fe4127501addad7c33fba8.zip 132,968,565
6.2.6 17T620 14 N/A f13196543af57998dcd63a82374cc4add65cd0ff.zip 132,955,061
6.2.8 17U63 14 N/A d58f05db430913c4005cd7ec9475d57e44b07bef.zip 73,169,090

Watch4,2

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A c6f6c36bb8e0c7f7e9787f7c01beb20a0287c14f.zip 1,477,071,484
6.0 17R575 14 N/A 1f1cc3a3ae09911e6686ce52570390f7765ce93c.zip 584,533,115
6.0.1 17R604 14 N/A 78bf465ec170743742c0b8ffd6439caffd8b5c83.zip 584,528,078
6.1 17S84 14 N/A c2ae41eaecc99bd493523b12f592754b66fd9edf.zip 457,246,069
6.1.1 17S449 14 N/A 3b6defaa33294e6e375460d8c5d05d2541287e3c.zip 445,788,926
6.1.2 17S796 14 N/A e99bd564febd348ca427388c824688d16af87b66.zip 443,740,306
6.1.3 17S811 14 N/A a6410142a9eb97ac164e6911de716b5948879977.zip 443,739,248
6.2 17T529 14 N/A deb82bae35678bf090b2108a204a85ebf83c1fd2.zip 182,221,147
6.2.1 17T530 14 N/A 2e48d08d20c77dd3a192c0e9fa592569464c5bf9.zip 182,234,263
6.2.5 17T608 14 N/A 278c9e3072495979749a101c9e4511c06e208fab.zip 133,041,174
6.2.6 17T620 14 N/A 4337327a53042b2e36c4732fc243426c0692da40.zip 133,028,151
6.2.8 17U63 14 N/A a21b2147bb0888befb3ce5c7c1c331021c30ed1f.zip 73,241,802

Watch4,3

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A e0644bfb51965889e419741ed70dc6bfa8736e54.zip 1,547,099,285
6.0 17R575 14 N/A fe06e03c692a1b94db94af21f33ab6cfcd291165.zip 608,512,396
6.0.1 17R604 14 N/A 774494ff13d924a920fd07bb9b2e561a307f6ef7.zip 608,499,960
6.1 17S84 14 N/A 2c39d254d72033fc45d29533ff33267dec6e4a19.zip 480,246,067
6.1.1 17S449 14 N/A 76643458ece9a2df514819961846a71dc896db38.zip 468,808,107
6.1.2 17S796 14 N/A 0419963f8977d28a90e2a8128a773c67a3f4db1f.zip 466,526,379
6.1.3 17S811 14 N/A 9a8edb08a2c200d2ba1b18efe46fed31cc9076ff.zip 466,526,212
6.2 17T529 14 N/A 8df692262968b337e41ff2d4901253b41ff62474.zip 198,053,669
6.2.1 17T530 14 N/A 6d4bf0311cc686a91255aad107d65a41799f7972.zip 198,088,816
6.2.5 17T608 14 N/A 0e095d9b4cff51fffb848e9f526489eeebed3a5f.zip 139,561,205
6.2.6 17T620 14 N/A 6c255c993924b33e2600a468e9d0c4c650ed640c.zip 139,547,403
6.2.8 17U63 14 N/A 15727fc95d836ab2f4106b7f2828478b0eb0ba4f.zip 79,356,466

Watch4,4

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 7f80d97fd20de573115c9b9d3cc88f150fc816da.zip 1,519,930,453
6.0 17R575 14 N/A f647a64a9e0ffaaa7e3d5029dcb4b4fd92302a09.zip 608,960,679
6.0.1 17R604 14 N/A da48eea21b5abbae8336731a55cae9df023e4676.zip 608,959,571
6.1 17S84 14 N/A 807bed26d1d21f586d04a67f812f8e49697eeba1.zip 480,798,670
6.1.1 17S449 14 N/A 363f192561495746be24583fdba110f91ccfeef2.zip 469,197,928
6.1.2 17S796 14 N/A 50cdbba6597772e2e62b1a1ce248c287126cef52.zip 466,923,000
6.1.3 17S811 14 N/A ced1c3372336237a16de9d2a3667c639bb6fcd41.zip 466,923,569
6.2 17T529 14 N/A c8118705296fa21e1162c43f691acc862c67f7b9.zip 198,204,811
6.2.1 17T530 14 N/A c1f889174ec551c27c1c4cf855256407579d175d.zip 198,245,429
6.2.5 17T608 14 N/A a315ec6b67d0c610a8a370eeaeea26e9d2deae80.zip 139,630,856
6.2.6 17T620 14 N/A 7db6980c2766dd815c35bedb5113417ef2a012ba.zip 139,620,437
6.2.8 17U63 14 N/A 30712d7a2bfe2da9df513887287afd0df6fcdb63.zip 79,409,067

Apple Watch Series 5

Watch5,1

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 63caaac5296a888a56fbc8cd4676f96d48b315ca.zip 1,506,657,615
6.0 17R575 14 N/A 3f6139ce34b5e7f34ef99d40ccb322076f2b281b.zip 585,021,796
6.0.1 17R604 14 N/A c1c112b43a204d15603240320ce5821946e8f3c5.zip 584,990,704
6.1 17S84 14 N/A ada3f5d7e05206ba1fded7c30163aefa22126801.zip 457,541,313
6.1.1 17S449 14 N/A 2ae12c2853a3e9bc7cbab31bcc5c70dade96a891.zip 446,288,297
6.1.2 17S796 14 N/A 47e2cb40e1513f5fd6cc5790f2bfa63038d150c5.zip 443,958,361
6.1.3 17S811 14 N/A 6ac416697c87b77093b3b25e2b8d26b30657f14f.zip 443,956,235
6.2 17T529 14 N/A 549ea90490dd4861909da13ffd2d5698ba3fc2c1.zip 182,425,670
6.2.1 17T530 14 N/A 50be61869f12163ee6837aad5fbd2781543ba27d.zip 182,411,058
6.2.5 17T608 14 N/A a53af0c1769599fc460d52e8a25f2e9ecb8e5c6f.zip 133,453,070
6.2.6 17T620 14 N/A 02977372c285f7235eb977e4def357ed0d86c267.zip 133,444,285
6.2.8 17U63 14 N/A c42c5a165f02ceb400deb34aca8fc65550aecc36.zip 73,505,070

Watch5,2

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 2eb8e3308acb08ae50bf70e60643221f407c5d4e.zip 1,478,333,014
6.0 17R575 14 N/A 624937a82b6bb22b0693e314910296f5d9c44fcb.zip 585,428,017
6.0.1 17R604 14 N/A 64998eada2b8ebee54a2799e399001170c8ef05b.zip 585,417,551
6.1 17S84 14 N/A a8fabacd01c58afc3823f2d58cc5cca67d62998e.zip 458,005,481
6.1.1 17S449 14 N/A f1fad9995cc0fa89d82601cd15bc90569a13e673.zip 446,801,019
6.1.2 17S796 14 N/A 27771f09ce328ecb7e1d2c82bad6e1d91d7a2d5c.zip 444,469,666
6.1.3 17S811 14 N/A b34a107bbdf5e8438c8a09cd583ff1c93701e6eb.zip 444,474,805
6.2 17T529 14 N/A 868a3e78f11c5b0785b6fb046b043efe79d66920.zip 182,570,562
6.2.1 17T530 14 N/A d47131d93fbffd22af67bbca0801ac5a6e60ea42.zip 182,556,088
6.2.5 17T608 14 N/A 85fd6ff538d8fbfd06eabf11146031c80bd60167.zip 133,521,280
6.2.6 17T620 14 N/A a982733dfc5ecdd46d5f487402fc770e169c312e.zip 133,511,917
6.2.8 17U63 14 N/A 290a0ba1b9532aec6a65e3e426f5d03a569e849f.zip 73,569,024

Watch5,3

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 9a5c2f87dbdbe3a503ff5b1bc3ed527b2175ae7b.zip 1,548,201,541
6.0 17R575 14 N/A 4fdb0a0068467227cd05e4c710329ecd03891f09.zip 609,287,043
6.0.1 17R604 14 N/A 43bb6a34ac18e57789e130891117650652ffe519.zip 609,250,883
6.1 17S84 14 N/A d419cfa995a56552e8e55ca2374420c59f1ecc85.zip 481,054,465
6.1.1 17S449 14 N/A 2a8905db3d171aac59a44c5e0b0c404415fdbe5a.zip 469,588,395
6.1.2 17S796 14 N/A 594e0eb5ca91f9a98564c72ffedca5eb775e662b.zip 467,155,945
6.1.3 17S811 14 N/A 91dbc9e2cb7c4db912a71658c7b29c1698bf266c.zip 467,155,977
6.2 17T529 14 N/A b2236ebc6a0aca5ec0bab14fca4be11b07106215.zip 198,544,747
6.2.1 17T530 14 N/A 37eda95fc2c45a683c473a97b822911f00d1be87.zip 198,562,340
6.2.5 17T608 14 N/A 74fa762fd9da8791af368d2f7702744264191b48.zip 139,948,012
6.2.6 17T620 14 N/A a665cfba526aab5c99b8bd5e6fc52d7ebe0feec2.zip 139,936,031
6.2.8 17U63 14 N/A 5426e663cbf84c3bb171e40fa867a7aa099f43ac.zip 79,684,330

Watch5,4

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
6.3 17U216 N/A 14 26 January 2021 N/A 94df61e66b4af2fed7cc69089de0b7cbd82856e8.zip 1,521,267,994
6.0 17R575 14 N/A cb5d0e33da81485a3682c095dddc58701d8214ea.zip 609,853,814
6.0.1 17R604 14 N/A cf24a3f8516e668589053eb1eda87e4bd570a625.zip 609,962,832
6.1 17S84 14 N/A cf4b5e698e7dcdfd842f96b5b87dd0bd7bf58d6c.zip 481,733,353
6.1.1 17S449 14 N/A a9aecb55a809f0c2902b6eabd849092a12fef47a.zip 470,069,334
6.1.2 17S796 14 N/A 98595e26a88deb34e752d46deef2a92578f072de.zip 467,662,290
6.1.3 17S811 14 N/A c82ffc81851feaba75f0c127068dfa05dc7399b7.zip 467,663,750
6.2 17T529 14 N/A d818cd5c7badd311111965ec91cd7667f8a3fca9.zip 198,690,038
6.2.1 17T530 14 N/A 45ee4793a04335a5e7941a6ce5ede894410a1185.zip 198,707,229
6.2.5 17T608 14 N/A 748fd91151832c30402b2805a1b186390947a533.zip 140,034,754
6.2.6 17T620 14 N/A 1420e706d66341c81d94228fa97a77482c2d6657.zip 140,021,097
6.2.8 17U63 14 N/A 20fbdbf3dc5d8f2eb7f9179029fa3206d42cd49b.zip 79,763,808

Notes

  1. ^ a b c d Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 17U208 was listed as 17U6208.)
    The listings on this page use the build number displayed on the device.
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