OTA Updates/Apple Watch/3.1

Apple Watch (1st generation)

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).

Watch1,1

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
3.1	14S471	—		24 October 2016	405a149288045fd48fd708cc01fa948509f41404.zip	979,528,558
		8.2	12S507		6aad57ceafc55e6c3d0177e203c42f4fc505bf29.zip	843,703,478
		8.2.1	12S632		f5bb1182c27803ab622189b0aa449e48a9ad14d9.zip	837,690,262
		2.0	13S344		46a76614d65e9aefe631ad6a8ab55e63da0af9d2.zip	606,860,321
		2.0.1	13S428		1fc459e529df7c353812635c558172c8b5144dad.zip	599,998,037
		2.1	13S661		1054b67bf9bc4cf254d9f745a6e24ca84ed9e32a.zip	596,848,980
		2.2	13V144		ab8008569a0a66a78281f33bc07318179ef31139.zip	591,456,423
		2.2.1	13V420		f103c9a8fff20d57b64fc983e6e2541df36f36b8.zip	591,400,510
		2.2.2 beta	13V601		127ce9dd8651f810d2732e941d0fd56366cb7fdf.zip	591,436,011
		2.2.2	13V604		6b65b317127baaa1060e589e683ef96d1c5ffab0.zip	591,422,939
		3.0	14S326		00ff7273c621c5de216563af35877c1939781f88.zip	60,002,098
		3.1 beta Pre-release	14S443		76669a6611dc16ff56f387d34a5304ccdb400c21.zip	53,538,428
		3.1 beta	14S452		0fab7847f1effc37a8caa8cd8358dca058849f4f.zip	43,102,327
		3.1 beta 2	14S464		83599f084af30d9c1d75695cbd509da58fef8fe9.zip	18,713,761
		3.1 beta 3	14S466		a705402cb0fc1b64317ed2f98e9a733e467484ce.zip	18,211,713
	14S471^[1]	3.0 beta	14S5247t		ddfc576e3f2c3e437d584a120f558bfdadf9265f.zip	335,673,884
		3.0 beta 2	14S5278d		99655c9cec31b7d498e4be9169cef8923ed61272.zip	288,499,964
		3.0 beta 3	14S5290d		efdf9a8014475b82ecca1225587c146fd53d8622.zip	246,020,666
		3.0 beta 4	14S5302d		d16fda475d84d6835e5def0bc4ad87a78be5cd49.zip	189,224,135
		3.0 beta 5	14S5315a		6e13602fb51bd3ac20c162984ff468f7146bc5b3.zip	73,539,299
		3.0 beta 6	14S5321a		3d07cac0c6336e357dafe640928ecb5ad75881a7.zip	71,148,986

Watch1,2

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
3.1	14S471	—		24 October 2016	8d4685a4b26e71be839ad8e14439ea8c6f4f60fa.zip	979,997,242
		8.2	12S507		b8835deac611bb69ed0e004a075898e7cbf27179.zip	841,435,938
		8.2.1	12S632		1b4e054c474f67c998db1966ac6eafd34ff9e283.zip	835,429,668
		2.0	13S344		a35adba97efd315da747dd70499b83a7c1689f95.zip	606,171,309
		2.0.1	13S428		e61d525a517099ee2ab123cf1d9adba5f8bb002c.zip	601,128,824
		2.1	13S661		a4a1fd100d6364c0d48aebe594cb01baa7c2c0f9.zip	596,957,086
		2.2	13V144		5c84d89cc61011bf28242cb6070477c4300e6870.zip	591,522,487
		2.2.1	13V420		06071962a3e87a4f1cea160e21953bce5d924ff1.zip	591,475,934
		2.2.2 beta	13V601		e5783917da4b8f0878d6f119da78bab0c8360696.zip	591,510,626
		2.2.2	13V604		9c6163dd4e61ddb9acab8713af4996beb2a283f9.zip	591,487,605
		3.0	14S326		98baba7cead8a1635296e0969bd71321047d2759.zip	60,005,194
		3.1 beta Pre-release	14S443		3ccf56d61ff865107d3107d7335aee631b34fde7.zip	53,530,248
		3.1 beta	14S452		d91f55557d3ba6cab610decafaa10bc14e110c10.zip	43,112,168
		3.1 beta 2	14S464		bf70f616730b8cec5348d5e028a5947a7bd15301.zip	18,714,327
		3.1 beta 3	14S466		9b2c293289049a147f436e451b6f7ae1b24a5826.zip	18,212,621
	14S471^[1]	3.0 beta	14S5247t		2af887a46336495bd7fd959fc822e42e03045f16.zip	335,662,465
		3.0 beta 2	14S5278d		6e618c56b02bc0cc3241611caeb99741902b6b3b.zip	288,502,473
		3.0 beta 3	14S5290d		313ab755605c94290d4fe73fc5f94881f230ff89.zip	246,034,315
		3.0 beta 4	14S5302d		d3c611e50f7d871ed0592775a79151416a701c57.zip	189,240,441
		3.0 beta 5	14S5315a		2c4081692e2a29df9e0b8ee6a2a8538045d2b770.zip	73,559,566
		3.0 beta 6	14S5321a		34741e8ef07f9e7144e1a66f7447e2ec100c16b8.zip	71,175,583

Apple Watch Series 1

Watch2,6

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
3.1	14S471	—		24 October 2016	cc4227d3656f71da3533a7806609814709146fe3.zip	995,852,960
		3.0	14S326		83116fcfdff077209442d5a581567ad516b244df.zip	63,605,375
		3.1 beta Pre-release	14S443		779aad27eb39f80db6f4e3b4e0248993f066cfce.zip	57,440,522
		3.1 beta	14S452		e8cd110e29efdefb80bd81c63d6224d790da8a8c.zip	46,519,623
		3.1 beta 2	14S464		853f5d3260c79fa6534d24610207ecc5b4d81322.zip	21,834,251
		3.1 beta 3	14S466		a7f799ea2c15d29a69cf89b8d09ddd40724c6a54.zip	21,274,863

Watch2,7

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
3.1	14S471	—		24 October 2016	7572d50cb590943bc1d0c7a2ff32649393b71240.zip	996,631,724
		3.0	14S326		505aef369b3f2739fe84149c605103c369f1864b.zip	63,614,242
		3.1 beta Pre-release	14S443		0823aa39e40ae0f327d266e1fe79646db6e80417.zip	57,437,964
		3.1 beta	14S452		340753f3945a1958c02b7f4ecc8223f576440f64.zip	46,529,846
		3.1 beta 2	14S464		cc9cc08c9e928247bf0a5a6c911842d4a111bb84.zip	21,835,578
		3.1 beta 3	14S466		ee540454d240cf7b8588f7b5438273516785c2f2.zip	21,277,311

Apple Watch Series 2

Watch2,3

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
3.1	14S471	—		24 October 2016	fd5f6b502fc1a5d0e996df94dcc2294ad10a21a7.zip	997,015,054
		3.0	14S326		c5455eae782bbbb74a8de312853760524378e4cd.zip	64,675,300
		3.1 beta Pre-release	14S443		9e24a0937417c6146a3a9afc1d547bbeef5a9ffd.zip	58,497,161
		3.1 beta	14S452		45c8b583736887a82a8abd8f6f79d84a82462484.zip	47,579,597
		3.1 beta 2	14S464		777ed7393bd68cd5583753ad1f241c2a12c18c3a.zip	22,860,054
		3.1 beta 3	14S466		cc8effd8f504d8122bba82ccf0e336ecfcd32fcb.zip	22,198,177

Watch2,4

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
3.1	14S471	—		24 October 2016	768d6220d1be0bc4969224fb5ffd7bbb9a300c16.zip	997,788,631
		3.0	14S326		6c36275a83678ab6a7c48857fc3c88bd0a12fa9d.zip	64,682,165
		3.1 beta Pre-release	14S443		1a6e661c2864cd6a2b3a9231ddf567ef84d8a8a2.zip	58,494,455
		3.1 beta	14S452		3aa8f018226bca86e4aea917c6c0db3a828ee731.zip	47,585,758
		3.1 beta 2	14S464		30757ed3257447659152477197501277345b1fc3.zip	22,862,540
		3.1 beta 3	14S466		1429a1f7df7b519dbd59fcd4a49afcecfdc014e4.zip	22,200,491

Notes

^ ^a ^b 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.

[inflated-1] 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.

[1]