OTA Updates/Apple Watch/7.3.1

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Apple Watch Series 5

Watch5,1

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A d77b768e06dfb1b066789bcb87aab0f2e51db516.zip 412,213,853
7.1 beta 2 18R5561e 15 N/A d932b7c66857c36b9bcf625d96761e5fbede0237.zip 355,953,237
7.1 beta 3 18R5572f 15 N/A 080b2f24d128b41c82981bf50044552fe7922c8a.zip 320,053,653
7.1 beta 4 18R5586a 15 N/A de6415373ab487675d22bc94a97e8c60aaecd4df.zip 309,542,534
7.2 beta 18S5545f 15 N/A 839559a452652ee5d018a06286f8279711aff089.zip 220,690,187
7.2 beta 2 18S5555c 15 N/A bae18a2780c6fe521cce4826fadfaba86bdc2d0a.zip 194,005,750
7.2 beta 3 18S5561a 15 N/A 115bbbbb9dca9ac5716e697bb9e4a4f8e3857a96.zip 193,170,562
7.3 beta 18S5780d 15 N/A 5f789d3acfe0234e126fb7f7d8081f8389bc9ae7.zip 169,033,145
7.3 beta 2 18S5793d 15 N/A 02ba394493affa81f33026e2e633748996aec586.zip 137,108,967
18S811 N/A 15 N/A 7a695f1c1ba6413380a6d9169e81b3929aa4be91.zip 1,764,343,786
6.0 17R575 15 N/A dda572e4e0448664cd61078db169e31a297d7ee9.zip 1,155,329,986
6.1 17S84 15 N/A e1f865a6abfca8b0fb0133d4bc1935ec91fa547a.zip 1,091,176,019
6.1.1 17S449 15 N/A 7f0a7e2c725de271fcaa3bdb936ffb3d0a136232.zip 1,090,889,893
6.1.2 17S796 15 N/A fd6ff6443e4343a5a16118e3cf8a7e46bc747725.zip 1,090,967,963
6.1.3 17S811 15 N/A 62874ca9dfca2a56dc9c6e31fd2eb41233638940.zip 1,090,967,205
6.2 17T529 15 N/A e645f6b685345605847ea67669c83bf773b6f06a.zip 1,074,732,266
6.2.1 17T530 15 N/A 6e6d9a2ff76e1282415318886babd6e9d212726e.zip 1,074,732,325
6.2.5 17T608 15 N/A 70ed56d1982a69a2f330fcb0e2af7bfe6b975c72.zip 1,074,798,991
6.2.6 17T620 15 N/A a4fb29422d2710ccc039f4060296ea58a319848a.zip 1,074,798,027
6.2.8 17U63 15 N/A 00492e1217684492a67a843605da7a838a4cf010.zip 1,074,634,677
7.0 18R382 15 N/A 38dfc24bda40ead8b7c684d170d9a69eaeda53f2.zip 463,243,485
7.0.1 18R395 15 N/A d448f51960d8b7964a44b9e5147e3bd345649224.zip 463,239,964
7.0.2 18R402 15 N/A 1f71cd08ed8c3437d6e017f37cf1ac4a6674e103.zip 463,388,395
7.1 RC 18R589 15 N/A d354e91bb3fa1b8a141d9f90cbfc4b64c3e3ba57.zip 308,119,619
7.1 18R590 15 N/A f49b124d2a35f69b613f7fd358ad33b261d97a8d.zip 308,101,709
7.2 18S563 15 N/A 9e989eecb70367944f3e695f024a318652428206.zip 173,385,953
7.3 18S801 15 N/A 9dbdbb1edbc09a668fe4a35a0dc6602ed09e0a79.zip 61,458,170

Watch5,2

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A 9e8f4df7fb394590cdd2389d6190da0e9c4f0c8b.zip 414,970,515
7.1 beta 2 18R5561e 15 N/A 0da6950aef65fd5937892375755868e48335c9b5.zip 355,661,037
7.1 beta 3 18R5572f 15 N/A 39de6a7608b517d4f948bc03a81b052cbdfa2f5d.zip 319,541,794
7.1 beta 4 18R5585a 15 N/A 3c450f5115b6ede2a3354ad78bfade4128276e22.zip 309,002,901
7.2 beta 18S5545f 15 N/A 6c7ff4f4fda9d69c161fbe90db8cd4bcc899e481.zip 220,839,908
7.2 beta 2 18S5555c 15 N/A fbae69553ca5e9dbbd03148b8e936e3233d4d9f9.zip 194,067,105
7.2 beta 3 18S5561a 15 N/A d72d6a79aa56dae262f6ddc265953064855a0db9.zip 193,236,759
7.3 beta 18S5780d 15 N/A edb092f5cdc0ff9f669d8ce7ecc92507424ef8a8.zip 169,096,979
7.3 beta 2 18S5793d 15 N/A f47069cb353bf776dd857ef9d8fcc34c6cbbcb0c.zip 137,263,432
18S811 N/A 15 N/A a6c877d8d1952e652f54c4bc2d0d49cc5f5d9604.zip 1,739,346,646
6.0 17R575 15 N/A 7f8b42bf9c30ec0ff92568b7e6cd41ec04c3f1e6.zip 1,160,178,522
6.1 17S84 15 N/A 2c5a12f8f2883554dc329db7154d8b7d82f96e6a.zip 1,096,396,715
6.1.1 17S449 15 N/A d1e8f4824a6f1be01f0626304ce0e9a931be4698.zip 1,096,197,267
6.1.2 17S796 15 N/A 67d443b72dfd5d25f05d8bdc083af184d88bd89b.zip 1,095,933,998
6.1.3 17S811 15 N/A 19dc6f9bcf455ab2ab022ea250e763bcbf706c76.zip 1,095,938,562
6.2 17T529 15 N/A 9bdea9c7fdf1081ee0087692efe6bcba21eb5cc7.zip 1,081,079,675
6.2.1 17T530 15 N/A c19f2ad2af934944cceb1d092b1fb011fb2597ca.zip 1,081,078,904
6.2.5 17T608 15 N/A 30f92a618ca61eb400645035a527aee15efe4e36.zip 1,081,092,839
6.2.6 17T620 15 N/A 65b05dd7fe287fcbcc17f9cbd25cf714bc59f34f.zip 1,081,090,438
6.2.8 17U63 15 N/A d9d9f5d5d2c98db6f54c75e28f4bdea1f7d5f90b.zip 1,080,928,492
7.0 18R382 15 N/A 880aa963672ff69dce0c23a01d9d49df5f6e7ba3.zip 462,930,614
7.0.1 18R395 15 N/A ab518b9f1865199a0a98d89d70955c9be4453a30.zip 462,919,160
7.0.2 18R402 15 N/A 6fa05030e9d2674c69a174d12d7541c243ff711f.zip 463,068,035
7.1 RC 18R589 15 N/A 9b5cf58b95fa62dfba4c6f7092e09234015db5f1.zip 307,593,476
7.1 18R590 15 N/A 48642a5146c6ba9b4053c4fd6425a669e57ac18f.zip 307,581,120
7.2 18S563 15 N/A 1a8e0ef8d39babd9dde1dd6e2ef227958e8f2266.zip 173,433,540
7.3 18S801 15 N/A 2f90f9cfeb7efed037de13bd0291f722e1b2be92.zip 61,490,629

Watch5,3

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A 69e56143c1eef7b98f4c5498a269c1bd3b1b708d.zip 435,199,851
7.1 beta 2 18R5561e 15 N/A 7524c800918562d12014c51a812c19a7355e28db.zip 379,614,591
7.1 beta 4 18R5585a 15 N/A 82379a439d74eecdadf25a6631ba0bad6f7e3858.zip 318,416,600
7.2 beta 18S5545f 15 N/A 605643c2e36c88350510bec5166007ff7636012a.zip 224,165,270
7.2 beta 2 18S5555c 15 N/A cef17edfda7eda89a4b3a8b2ea0e1e5759a508d3.zip 202,260,713
7.2 beta 3 18S5561a 15 N/A cc814ed8d0e73cb22b5e6ac7b21dfc08a028de92.zip 201,623,084
7.3 beta 18S5780d 15 N/A 4ae81ef951ac8fccc5aac75786ad5d1a67e4748c.zip 186,501,242
7.3 beta 2 18S5793d 15 N/A 17431e1e74ac19733bc1d87c8bb75b17842fe497.zip 143,783,153
18S811 N/A 15 N/A aa4a520c0046bebbb52dcc3959d3b6a7d6594ded.zip 1,805,448,835
6.0 17R575 15 N/A b64eddb2349e07141c6cabcb0c8efeaa3ab69235.zip 1,185,860,002
6.1 17S84 15 N/A a2acf52d669ec428d7ebe5d8d7157bbe100617d8.zip 1,122,023,563
6.1.1 17S449 15 N/A 4a37594e58de51ac6931c8bd7641e28279fe174d.zip 1,121,785,356
6.1.2 17S796 15 N/A 7dc11181019f72d5128831e04f331a3eb5a543a5.zip 1,120,880,365
6.1.3 17S811 15 N/A 96fec00a03cd1d2b19104cb9f30338d9ea5dc04d.zip 1,120,881,437
6.2 17T529 15 N/A 86ca2d56a1a5263b2b092716007372cedefde26c.zip 1,107,280,768
6.2.1 17T530 15 N/A 048c62bc2689a6a9abd9ebcb09983fbe4dd4c149.zip 1,107,280,398
6.2.5 17T608 15 N/A 86053fbb79b6a22cc533d5e2f38428443780cf11.zip 1,107,043,408
6.2.6 17T620 15 N/A 023ebfaba88639043083d56a0c48c189fef9816f.zip 1,107,039,357
6.2.8 17U63 15 N/A 652d9efe25f55a08468afa2549a71116056a2bb8.zip 1,106,902,376
7.0 18R382 15 N/A fcc0b84a67e0172e409bf9eda46ffcba7877d15c.zip 484,057,230
7.0.1 18R395 15 N/A 6eb31907ee6e0bec2fef0abd091c50adf07e0edc.zip 484,035,555
7.0.2 18R402 15 N/A cee971712af7266bc3fbd2ab79b9a2419b75c202.zip 483,982,226
7.1 RC 18R589 15 N/A 5cf80c130a31f6bb5a4a2dc939dc9a39500bd957.zip 317,017,487
7.1 18R590 15 N/A 1918f503be3ed3adf3bf37a73ea8360cc4c3f997.zip 317,026,314
7.2 18S563 15 N/A 5d405ccdaada512757102597b211cc77bce8d023.zip 180,820,153
7.3 18S801 15 N/A 282df01333b3fc82d5a1d0c948585e844101a773.zip 67,381,273

Watch5,4

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A f9ed37a108d5ca012a2c89a3b77c8478a042c57c.zip 437,033,244
7.1 beta 2 18R5561e 15 N/A fa14e9793d545205d1970d7e5623b9fef2f201e9.zip 379,298,087
7.1 beta 4 18R5585a 15 N/A c8f18c003598f9a2d08df7040df1ca605fd1d83b.zip 317,877,041
7.2 beta 18S5545f 15 N/A 460dc99e27d72f7b702b43ca526334b6df1e984e.zip 224,336,731
7.2 beta 2 18S5555c 15 N/A 44baf69fb30b0a9850db97d615cce5de8e544f3f.zip 202,334,590
7.2 beta 3 18S5561a 15 N/A 0b06d4bbf4fab24ab1a2f233c5c23ec81f3658cc.zip 201,693,773
7.3 beta 18S5780d 15 N/A 90bc3dfdf2a7afe2060ba4cd6aba4ccc2b136b91.zip 186,574,784
7.3 beta 2 18S5793d 15 N/A 1022e5bfc0836fa87c16a312ba63f20d903342ad.zip 143,952,672
18S811 N/A 15 N/A a8a00865fe0f4420d2c5a9502c45d3cd50af1299.zip 1,782,238,160
6.0 17R575 15 N/A d456fa10565bb1c4cdcfe1fc089ac2dae927d954.zip 1,191,028,156
6.1 17S84 15 N/A f4d8e0a8baafcff744b7a05fee8dbd36b6fa162a.zip 1,126,780,020
6.1.1 17S449 15 N/A 0df473b85e56c18d4621df0670a1f2a79b6c0182.zip 1,126,514,665
6.1.2 17S796 15 N/A a7bc567fcd8c1ce0de17e99e510dbafcb713b1c1.zip 1,126,885,072
6.1.3 17S811 15 N/A 08a16ff2292936f34a9a453b06beca0108ad93f9.zip 1,126,886,379
6.2 17T529 15 N/A ec056da040bc639501654b274b11bb39661ae8cf.zip 1,111,056,549
6.2.1 17T530 15 N/A 867c33b90fbff63d1096ba17f829daebf1d0a2c7.zip 1,111,057,375
6.2.5 17T608 15 N/A 223060fc8d9cf10205111491a65a1ac565d07259.zip 1,111,246,186
6.2.6 17T620 15 N/A ddf61a82ea56716e38d8e990277eaf5403b82d2a.zip 1,111,244,261
6.2.8 17U63 15 N/A 9665dd51937bcaa39e50f641679a5ca22b1a3544.zip 1,111,079,551
7.0 18R382 15 N/A 0abeefa5949be3d021f870c7f48a71e7401744d6.zip 483,745,075
7.0.1 18R395 15 N/A 20db58c59176f0bdb408c3801a127a1040232bce.zip 483,701,988
7.0.2 18R402 15 N/A ca18e528c94e38b3c11b961d41a336861d09717b.zip 483,646,914
7.1 RC 18R589 15 N/A c451f615d15d67ab2c9d1304e00852f49f6bc686.zip 316,517,570
7.1 18R590 15 N/A 9b314e410119ad1030b2fcf110e00276d9093dc3.zip 316,511,047
7.2 18S563 15 N/A 794237575dc68b73dce9b6587742628d49be19ea.zip 180,882,443
7.3 18S801 15 N/A 60db7b6f2324bf77666f2bf7f9723f0daa413c16.zip 67,416,245

Apple Watch SE

Watch5,9

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A f3221194570f96e8e3841a1036fa092aa21325d5.zip 412,236,259
7.1 beta 2 18R5561e 15 N/A 187e9e99ba6a1a45c5b2d91034484a02a80a91a1.zip 356,016,978
7.1 beta 3 18R5572f 15 N/A 51ec2902613f05777842221e41c6c85e5a57cb0a.zip 320,112,848
7.1 beta 4 18R5585a 15 N/A f49cca7a7d0342c3066403b0fcea122683badd95.zip 309,571,969
7.2 beta 18S5545f 15 N/A 5ca08756c9ec998c5a0e07cff6674c41fe0a71f3.zip 220,729,920
7.2 beta 2 18S5555c 15 N/A 36b91fad03d66b7f30c51a2158873e828b21fef7.zip 194,045,975
7.2 beta 3 18S5561a 15 N/A b2d99480911a499e875c73d07cc119720aa05d12.zip 193,208,094
7.3 beta 18S5780d 15 N/A d91e097775d3b61ddfd6e7c4349a5dbdfe49f389.zip 169,062,065
7.3 beta 2 18S5793d 15 N/A 5835b8df9502cb908ab9eb29a6ef47a589e14962.zip 137,086,097
18S811 N/A 15 N/A b6f6627616d8b3be6c1bc123c51b9f98cdd91f4f.zip 1,764,171,844
7.0 18R382 15 N/A 7e448bab5b4d5e8471f6239a974a9c7a38cb2631.zip 463,264,700
7.0.1 18R395 15 N/A 9623a22e2b7c152ec1067447a25f4a5bc9c75c07.zip 463,258,646
7.0.2 18R402 15 N/A 4da5de595f1f4a12bc8bf1654a7c35117a236351.zip 463,423,969
7.1 RC 18R589 15 N/A 6b6114fbbd92300ebbb5fb84b3e6b48e2f050f39.zip 308,164,824
7.1 18R590 15 N/A 3fc773886557cad970546da2dc5d985f04ab4b3e.zip 308,148,749
7.2 18S563 15 N/A ba7632e24b288373f108456dd015e89ae931a111.zip 173,417,143
7.3 18S801 15 N/A 32c7c934e4fbcf2bc399d0592c641316763eb971.zip 61,423,541

Watch5,10

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A 206867922f2d171331c972cdf2f9d70440ed8c49.zip 415,038,051
7.1 beta 2 18R5561e 15 N/A fdcc60228e14a721ca8f44051bc2f02b3d652f27.zip 355,715,300
7.1 beta 3 18R5572f 15 N/A f13109706c4a5260066743ea82fad0509834fcb8.zip 319,592,012
7.1 beta 4 18R5585a 15 N/A e11a674bfb70116ce409ed7fc7c1f93800403050.zip 309,044,007
7.2 beta 18S5545f 15 N/A c61cee4ae0e150eb05e1564efeeb9adfc00b699a.zip 220,890,156
7.2 beta 2 18S5555c 15 N/A bea542c94c35493d1f3f16da7411a956bf34dbb0.zip 194,131,077
7.2 beta 3 18S5561a 15 N/A 44620b120ad9c27dd7b43bcbbe53dbf2df9bc049.zip 193,288,767
7.3 beta 18S5780d 15 N/A bde7f0b595669e639a3ba54d6c4742206dc9046c.zip 169,145,449
7.3 beta 2 18S5793d 15 N/A 1c4084c5ad9262786540153910a6e51000836387.zip 137,234,260
18S811 N/A 15 N/A 20c3527a950245f091f0ed9dd7dd97cba44249a0.zip 1,739,301,395
7.0 18R382 15 N/A 19928b9743a1f859dcd2edd3840e8bbc20b074bc.zip 462,949,832
7.0.1 18R395 15 N/A e6b1a6f4dacfa492f709fc55fe9f0d4f8a3bb24d.zip 462,935,231
7.0.2 18R402 15 N/A 7ea23a1873192c249a3d7df80ecf1167e107c55f.zip 463,096,796
7.1 RC 18R589 15 N/A 4ce951950807182902636c93a9e7dd58218780f2.zip 307,641,195
7.1 18R590 15 N/A 13447e8e43404c727ab247692253f14be16030b0.zip 307,650,828
7.2 18S563 15 N/A f4db5441c3d0d200ba3512384ee5ce274b3a764a.zip 173,487,291
7.3 18S801 15 N/A 8fab832297a85ae814c58a44916bd87d7cff8e61.zip 61,469,834

Watch5,11

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A aee5bb3d5cf438ec982398181b01630cb9e04aec.zip 434,599,343
7.1 beta 2 18R5561e 15 N/A 46dc473caafdb7a21af58168e0c1c950cc00673a.zip 379,041,746
7.1 beta 3 18R5572f 15 N/A aa4b17001d845fffc41e0e869b86a8b7b47cd40d.zip 328,950,521
7.1 beta 4 18R5585a 15 N/A f08c5a19a792b403870dabf95ab4d39ff34aeb48.zip 317,831,167
7.2 beta 18S5545f 15 N/A ffd8cb851af667011b23496e03cb0ccf7e90fa8d.zip 223,628,310
7.2 beta 2 18S5555c 15 N/A 733047baab85da01ac0d1831cf033f03274e2f45.zip 201,673,157
7.2 beta 3 18S5561a 15 N/A 51e798578fb9dafbead8c5d43e8d6e64a010a0ee.zip 201,023,875
7.3 beta 18S5780d 15 N/A 8a936e1708607adb21bda2e1afdd23264cf1a40b.zip 185,914,452
7.3 beta 2 18S5793d 15 N/A 34d31c744e86b3fef20f11764ef1ada37f41d51c.zip 143,097,903
18S811 N/A 15 N/A 9f0f626fadd1ac53013750300ba7a2d0f2e95872.zip 1,804,626,990
7.0 18R382 15 N/A e72038ad413a997c9a0d0a391a787480ac0ef692.zip 483,463,655
7.0.1 18R395 15 N/A 3b1d45b0e58738db8cfe24017084620c26da071b.zip 483,448,479
7.0.2 18R402 15 N/A 5c4e5c90b2f1db9cfdd4224dea2bf5433e3ad4d2.zip 483,408,022
7.1 RC 18R589 15 N/A b6435ac26aa8c73d66b2b4190fe0ec2abb596c7c.zip 316,378,709
7.1 18R590 15 N/A 996d648f0a6b7e8dd69eabf05602babbc2f5e401.zip 316,395,875
7.2 18S563 15 N/A c2dc5deed0bc64492612fdceacad2adcc88a8e9a.zip 180,220,322
7.3 18S801 15 N/A 87e18e73ac040e0887b712301bd01ca9e967876a.zip 66,699,755

Watch5,12

Version Build Prerequisite Version Prerequisite Build Compatibility Version Release Date Release Type OTA Download URL File Size
7.3.1 18S811[1] 7.1 beta 18R5552f 15 15 February 2021 N/A 9c8b37df33b59b263e5adbd4743a8301bf22ce07.zip 436,444,416
7.1 beta 2 18R5561e 15 N/A c3d9f6dfae6b2ecdd9fc2d8c9463a9a877fabad1.zip 378,695,086
7.1 beta 3 18R5572f 15 N/A 6255dbd1948a53c0e9453bc260d48a12e210b9a5.zip 328,431,034
7.1 beta 4 18R5585a 15 N/A ed9e659e56aa0b110e5d36b378cd12f2ecb52bd2.zip 317,294,909
7.2 beta 18S5545f 15 N/A 80e348ae27511b889085c7d5c6ae4c141c02c65c.zip 223,797,932
7.2 beta 2 18S5555c 15 N/A 7a772fb813517b1c4318f1ec5ea08644dfb7484b.zip 201,717,017
7.2 beta 3 18S5561a 15 N/A 54b81f98d56a55de010d3bc822e6c06689dd3a4c.zip 201,079,097
7.3 beta 18S5780d 15 N/A a3f3e9b2fb9ec132ddf094472b78912743b211b9.zip 185,980,029
7.3 beta 2 18S5793d 15 N/A 36d07fb87da807e1d4312b444377fe7cde76b21c.zip 143,248,422
18S811 N/A 15 N/A 2c3320423659d560b2ae8c9e392cb5bdadb47ae0.zip 1,781,037,010
7.0 18R382 15 N/A 3073bfe1bca6d5ddd243abd2183f20cf1af63491.zip 483,136,267
7.0.1 18R395 15 N/A 7d0e0323b84bd1bcb464664ccf77aedb0571f172.zip 483,106,786
7.0.2 18R402 15 N/A b12c9578692961b04bbe4f51ea9804e500caa7df.zip 483,069,111
7.1 RC 18R589 15 N/A b2c72fe683a760a0ef5522bd24e19c67ffcdf1a3.zip 315,867,167
7.1 18R590 15 N/A be8e847cdf88dba2ceccb87d32e62ef197dfaebb.zip 315,859,618
7.2 18S563 15 N/A c87d36d286253b2ab8112bbf9f7694fdf86e5030.zip 180,280,359
7.3 18S801 15 N/A 0250fbdd84fddc65352b78e697411fde8ea2912d.zip 66,728,781

Notes

  1. ^ a b c d e f g h Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 18S811 was listed as 18S6811.)
    The listings on this page use the build number displayed on the device.