OTA Updates/Apple Watch/7.3.1

Apple Watch Series 5

Watch5,1

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

Watch5,2

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

Watch5,3

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

Watch5,4

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

Apple Watch SE

Watch5,9

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

Watch5,10

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

Watch5,11

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

Watch5,12

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

Notes

^ ^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.

[inflated-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.

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