OTA Updates/Apple Watch/5.1.3

Apple Watch Series 1

Watch2,6

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	c35d68660f85893af2ea1acae97c5eb54f5e8bc8.zip	86,338,511
		5.1.2 beta 2	16S5046a		c6469f476fb72b968ee15039eb1f7514c7a28343.zip	86,121,548
		5.1.3 beta	16S5523a		842fba98ca815357893d4b50178ebf3f8b816f56.zip	68,941,011
		5.1.3 beta 2	16S5531a		f9fc6edac9e3bd4c39ed7d498649a3b15aebf91e.zip	67,827,905
		5.1.3 beta 3	16S5535a		ab61c173dfe8f9836158d052668291b0c7e36624.zip	67,313,747
	16S535	—			b4de988c2cdb429012f26a7760d01f653f380ef5.zip	1,344,844,348
		3.0	14S326		b637ead402f3205634dedb07632d709b057b76cc.zip	1,018,430,925
		3.1	14S471		8b9c1d72f80447a537f5f28aa52665d8b1c668be.zip	1,018,263,700
		3.1	14S500		6867bcb6d60ab464628e2419df7375a25f18d96a.zip	1,018,263,700
		3.1.1	14S883		21e964b08ebc95fee0054c7d06e66f56ccfd401d.zip	1,016,128,978
		3.1.3	14S960		573449e5e8935104e421d21564945cd1ac7a1ba5.zip	1,016,127,273
		3.2	14V249		4c7474e7e4a315cfa4fc6baaee8145047c44788d.zip	1,002,511,610
		3.2.2	14V485		68c4f2d13e0f360c4606395841c3239f448016d5.zip	1,002,461,554
		3.2.3	14V753		9e3913d0727defffcf8dd9304edcf9dcd7e8e18d.zip	1,002,449,072
		4.0	15R372		2b846a8e3e45f27d13cac317728ceecfa5fc8dfa.zip	810,803,985
		4.1	15R846		11cf05b766250ea7e14ee81a8f508d006b21b54d.zip	789,448,391
		4.2	15S102		2533cb43248d76ba80bc1275e41ef5988368edee.zip	785,129,070
		4.2.2	15S542		61258c365ebda7d1d6e4c618d3388762543ccebc.zip	785,099,336
		4.2.3	15S600b		d1799e8ba1df5afef24e7c4af6201dd811dbc5b5.zip	785,099,099
		4.3	15T212		7c22d9804ed5761cef1c0517daad0827b7de0fe0.zip	775,857,297
		4.3.1	15T567		55d2eaaa498059886a946e8a00e895bb5050b49f.zip	770,929,506
		4.3.2	15U70		6dbc209fbf52191ea03ff0027e03aa97e33d2fdf.zip	770,901,789
		5.0	16R364		81d9ff3e26a4fac042bc5a083b03f16988363eb0.zip	182,866,285
		5.0.1	16R381		bd252bfc18964cf43478066eb470399f6cbd4335.zip	182,829,874
		5.1 beta	16R5559d		5fe428fc85e4f61ff729ff2b58f96fd5479c9b97.zip	178,978,640
		5.1 beta 2	16R5568d		f72dc671c13f8af25a6204ae974f1b1de90093fc.zip	155,170,677
		5.1 beta 3	16R5577c		a31816ed4ed6a11864aab5f6659cd3b0915a00de.zip	145,266,641
		5.1 beta 4	16R5584a		d74ffaef8df46be74c2f79912cb2486a61ff9c22.zip	144,816,246
		5.1 beta 5	16R5589c		1ff37d4d3f6f2e717c71b06a49bd7881981a882f.zip	144,417,134
		5.1	16R591		f058cd7a4cab7d60a9778c4b969ec8cece4769d6.zip	140,255,106
		5.1.1	16R600		c886672b3922003ec04811938ad2183baf8f05b3.zip	140,251,203
		5.1.2	16S46		edaddb6ce9fe2a15b4f158ff85059e7534c74183.zip	64,402,408

Watch2,7

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	4c09f60ccb56ef26a4cef38aa9c3c7a5c50974b6.zip	86,405,567
		5.1.2 beta 2	16S5046a		ca1e7791af6fab83481256ed44638aba9c457179.zip	86,154,170
		5.1.3 beta	16S5523a		1dffebfd2f4d46f781fe00a45f9def803d99ee30.zip	69,014,545
		5.1.3 beta 2	16S5531a		53dde9456696a878e73b962d6c70fcd6fc15852a.zip	67,793,020
		5.1.3 beta 3	16S5535a		a62897dc7a19192b701d064a613f35a685460781.zip	67,280,422
	16S535	—			15339af604e23c1c4cc8772c99d845d975d2cf31.zip	1,353,345,205
		3.0	14S326		d76efea78a0e3f679e9aacdbe006327598ac0347.zip	1,028,195,897
		3.1	14S471		5bd973d727bc6ad4fdcfdad87fce01609283f682.zip	1,026,511,508
		3.1	14S500		5333564f5f7f32351bec8046f1c8311f4f64ac21.zip	1,026,511,768
		3.1.1	14S883		94ac155dda88fe11d9774e1be5ed458c6ddeb2fb.zip	1,023,586,834
		3.1.3	14S960		879983089f4d649172c92e46bb89f7d544083590.zip	1,023,586,036
		3.2	14V249		a9c8d1372d5e9886f2ad225ca9e4f0ffaf76a4c2.zip	1,011,052,380
		3.2.2	14V485		dd377157ae7f9e21462a7a5b1c2440d0da19ce06.zip	1,010,999,161
		3.2.3	14V753		27997813bca7ebc3c44a2c66a943a885c8d0e65b.zip	1,010,987,592
		4.0	15R372		18dc21bdeb5e0a56f786137882aa9d437020642a.zip	811,707,382
		4.1	15R846		bef3018c883232998d979d87c75a3aa5693de04d.zip	790,315,662
		4.2	15S102		5160c590f3f9bdac5813482c9d719a5759513499.zip	785,975,918
		4.2.2	15S542		994d74490f8d100ae73a71a881807b23ef2967f3.zip	785,945,253
		4.2.3	15S600b		6670e60b8905a75e07fb8a5644f77128a94d37e0.zip	785,945,804
		4.3	15T212		48af80ba52a6ed210b98255b11cf4d65cab0bd30.zip	776,726,839
		4.3.1	15T567		79f10f8640ed4c4dbae29093bc4b3764cdcde577.zip	771,766,833
		4.3.2	15U70		03dd59ceaf10f1c85da5eee0f515080fe514718e.zip	771,740,916
		5.0	16R364		fbbd2799cecd944ee0a85dceb3bd7e6ffdd924ad.zip	182,959,917
		5.0.1	16R381		63329319b305786dfe0fb9ec6ea85407dd510d10.zip	182,915,034
		5.1 beta	16R5559d		118b0b53059ce3408c67ac5240b4492ae4faff65.zip	179,018,249
		5.1 beta 2	16R5568d		3c6d2183f4834cacf3a0cb470c29694680d08f88.zip	155,203,463
		5.1 beta 3	16R5577c		c15ffee03d284d591ce28c0484c88659c7e3aeca.zip	145,373,868
		5.1 beta 4	16R5584a		04148c62eb82409f053f30359455a8a128250ac6.zip	144,891,440
		5.1 beta 5	16R5589c		453205935b1605ad12d1c9bcdec394fb2793e4aa.zip	144,526,917
		5.1	16R591		2501a722375cbe053cd0b747b65f497621c7882b.zip	140,333,965
		5.1.1	16R600		e62931f8bf11bac27177bb3b8ebae69166b94d66.zip	140,323,281
		5.1.2	16S46		9238cbd8d30252db161f2002571534606e3f4da4.zip	64,433,515

Apple Watch Series 2

Watch2,3

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	6a118cc258f9d57c5041a67a548737bdf07e1584.zip	87,227,094
		5.1.2 beta 2	16S5046a		6f0a7be338cb77d02c4aec8956e41c1c78821d0f.zip	87,009,350
		5.1.3 beta	16S5523a		44bf603d7a60c6db64ccf0c1d2a985f23f01af38.zip	69,829,208
		5.1.3 beta 2	16S5531a		55496fcee3215782f9a11e02a6223824df492c40.zip	68,716,241
		5.1.3 beta 3	16S5535a		d36e22301b4ae9a4518c09896391c8591dbb8a70.zip	68,202,054
	16S535	—			425d87c338ba128c47bd359a1dfd09a5c1006700.zip	1,345,732,769
		3.0	14S326		76e41dbebb351b01a2cdea4aabe158cee9e57e4c.zip	1,019,302,503
		3.1	14S471		024c74bc18b75d933fddb6e5fb20cb9575be263c.zip	1,019,136,672
		3.1	14S500		ef9f4f47ccbce19ab8ad540757fc1f05a67e5b40.zip	1,019,135,976
		3.1.1	14S883		c1d4f05fdc1a31d3c683f66816a6dfd017fc47ed.zip	1,017,040,591
		3.1.3	14S960		71aa029ec393fcbf54100740b31eda477b65998d.zip	1,017,039,721
		3.2	14V249		78a1eb4fc652cda6031153c172d49b604cc773e1.zip	1,003,434,838
		3.2.2	14V485		1e0465336278d86ec33311227514578e06182668.zip	1,003,389,579
		3.2.3	14V753		fde474b4fa2ebb28d66392567e1abe836107cff5.zip	1,003,377,834
		4.0	15R372		4ce2b67b64b15815ea470dcbd861297c1a279f7f.zip	811,875,823
		4.1	15R846		925d2b8c778db553b71637b4f8f231d9fcb690a0.zip	790,387,232
		4.2	15S102		d5703e3c30e4a9dfbab59b500dd5c1589aebded5.zip	786,058,661
		4.2.2	15S542		80d6db1e578db0b2885c174aff000304b27ead71.zip	786,028,334
		4.2.3	15S600b		7668564d69dd2840af557df2573119ba93cec967.zip	786,028,586
		4.3	15T212		8aa1c6cf5ab42600ba535afaa7801ee749e66615.zip	776,745,689
		4.3.1	15T567		a351f5e55de109943fdb31677dc5837bae68dd6a.zip	771,818,270
		4.3.2	15U70		9b3f3fd0ab334902f570afef032ebc571d05462a.zip	771,790,003
		5.0	16R364		db1b951baa353ee4797a2ca040a62988b2fd6e67.zip	183,754,175
		5.0.1	16R381		e7e741d9940788d00fbe70c6cfd5e17e567613e2.zip	183,718,972
		5.1 beta	16R5559d		afdd18029f10feff6909504065240d1975c8921a.zip	179,866,432
		5.1 beta 2	16R5568d		01aed93ed55edaee0f2d5b43ea620ddd1738fa09.zip	156,058,809
		5.1 beta 3	16R5577c		d790033256f2b4bda4f0b6fe4fabd060e2e0ae17.zip	146,155,376
		5.1 beta 4	16R5584a		aa22a8a1f8023c0a780aabba502a2f592a25690f.zip	145,704,005
		5.1 beta 5	16R5589c		629e2f034a99799c4854624135251fb2d3c07d02.zip	145,304,617
		5.1	16R591		0091b2510a2bc732cca975515c2211ea2f22f1dd.zip	141,143,200
		5.1.1	16R600		384f18007fa2ba6ca596e889406ec11f4eea9db8.zip	141,139,624
		5.1.2	16S46		052c9c08dc6bfd2420e0fd70917c04f74526453c.zip	65,290,897

Watch2,4

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	aa07180796fe56d660a85df8ec744213769c626e.zip	87,294,786
		5.1.2 beta 2	16S5046a		fd1f4d591ba7fad1c761604351d251cb8a3f0d95.zip	87,043,012
		5.1.3 beta	16S5523a		608d324dada2a8f0656708fc81110655dec7d84c.zip	69,903,661
		5.1.3 beta 2	16S5531a		7264922715d3c6edbc9c4a07daa3f20f5ea2aa74.zip	68,682,061
		5.1.3 beta 3	16S5535a		49787ba34b6288d4212b1b15a2a7c2371657b551.zip	68,169,911
	16S535	—			f33d74fd594a85ec88aed95edc6fc06fc647d9e9.zip	1,354,234,329
		3.0	14S326		29da163db56b9a794a14950b12ffd19206563709.zip	1,028,836,812
		3.1	14S471		3c49b19c39f3fd9c5440bf3833ade5deb83f8f9e.zip	1,027,444,913
		3.1	14S500		437baf1a16ff8fa8b859a3baf3d751dd83efed21.zip	1,027,445,635
		3.1.1	14S883		5f8f54c63fa03637b65f76fa9f122d38b315d27f.zip	1,024,591,992
		3.1.3	14S960		6f16e07d3324c25a4b798f1e49a9f73829422b8a.zip	1,024,591,035
		3.2	14V249		d5e03907f6165703c16294addcb0b7fb1fcdec0b.zip	1,011,959,224
		3.2.2	14V485		32983cadd0ac4ce1d04818014c0a5d0c6a3ce87c.zip	1,011,922,168
		3.2.3	14V753		68339f3b318be5bb6bd2264abbe301c209b24e3f.zip	1,011,909,532
		4.0	15R372		e6d54e9937bca39e5c75841d1e0e3ab1ab0cff80.zip	812,760,721
		4.1	15R846		41105d1b636959287b8788634d42a7df7c3aef14.zip	791,242,505
		4.2	15S102		4b64dfaca1f6fe300bd3d8d652af96f92ae1c752.zip	786,912,195
		4.2.2	15S542		3165e7e398888920c4e1cfd3910d8dc5b0ae00c0.zip	786,881,553
		4.2.3	15S600b		68b9d364dd2490155c69c5dc50d2db7e09f8b01d.zip	786,882,289
		4.3	15T212		aea16eb10f0e54d1cffe8b295478c8d37925abe8.zip	777,615,858
		4.3.1	15T567		9fffe18d1d45f5bd7e843ee1f9fcb2d27e58f3af.zip	772,655,259
		4.3.2	15U70		e5d3b7c5f2b8483899c34092b0a28db956816756.zip	772,630,618
		5.0	16R364		d1ffa1005a830cabf98091517c03ffa7b406cdd0.zip	183,849,359
		5.0.1	16R381		49701580274be088e7277573a116d5cf948ee46d.zip	183,804,625
		5.1 beta	16R5559d		1186f28ba9d7912a73275c58b6da07ee2612fc18.zip	179,907,502
		5.1 beta 2	16R5568d		da63cf88a92bf55c37c66535499eecf033459950.zip	156,093,002
		5.1 beta 3	16R5577c		54a1e2f610912c1b1a7e906325ffd5ba51c332f6.zip	146,263,279
		5.1 beta 4	16R5584a		1944bccc7db608da2e68f77a99494729edb99382.zip	145,780,109
		5.1 beta 5	16R5589c		5862353dcd224de839860ef3d3df7b73e20f7dee.zip	145,416,268
		5.1	16R591		1575bfc329e00b49e58227f252b5dbe8dc0cf232.zip	141,222,399
		5.1.1	16R600		d65d2919a1ad0f8ea8252b8e6a50740f9b72377f.zip	141,212,226
		5.1.2	16S46		1aa3e484e1fad6830cd38935bf839cc4b3126903.zip	65,322,997

Apple Watch Series 3

Watch3,1

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	b1cd220ac090bc05b6f7b6306d3f807de7a5f2c3.zip	112,303,953
		5.1.2 beta 2	16S5046a		5b219e1653df21c11567968535508718b0ba4393.zip	112,151,212
		5.1.3 beta	16S5523a		f70a9fa0dd81e6dfe70fc9b107b8019dcde0ef9a.zip	112,623,111
		5.1.3 beta 2	16S5531a		f84284eb0956849a4d986e984ee127ce46dbe344.zip	86,774,663
		5.1.3 beta 3	16S5535a		da612f4c0d583846de0c1a67e3da5b2758884b62.zip	86,312,150
	16S535	—			2b3eb924620a86654b5a75230aacd34a98a3729a.zip	1,422,780,362
		4.0	15R610		ab6ae708b5f85b2d0d31494eacaed33accc8f0ef.zip	860,314,701
		4.0.1	15R654		70e316db8d509db32e8fa010dfceb8f10571c40f.zip	860,306,855
		4.1	15R846		55ec96e5336c4d264ad1d4b3777e2a553407d12a.zip	839,453,181
		4.2	15S102		4822c880a57c1de06a01ab3caec697bfa117a914.zip	836,045,640
		4.2.2	15S542		2b505b45bbf6c536e485e54a81bf5b0d8675db72.zip	836,014,513
		4.2.3	15S600b		dc79444b5da8bf189d828b0fa858a991fe415dbd.zip	836,014,856
		4.3	15T212		3cd4131dde266792a29138d04f6d3360c9ab1947.zip	822,068,821
		4.3.1	15T567		04028e2706081f315a79cd4e17c3d28183959f7d.zip	818,858,871
		4.3.2	15U70		c30b4e6b580d2cf6dd3039ac6ecfc33aea48cd17.zip	818,820,443
		5.0	16R364		9f7e2f7145bcd4da1cae7344548dfbec6d510d7c.zip	231,749,947
		5.0.1	16R381		2195bde94514606e2f812c39c31d8858f5e3250e.zip	231,705,101
		5.1 beta	16R5559d		4ff3c0f176e28e0bff58021840f5f716d18cf0c1.zip	225,022,436
		5.1 beta 2	16R5568d		0a0b85b44f73656cae1c21094b3791cec8e9eae9.zip	201,445,956
		5.1 beta 3	16R5577c		e13d334a38c43df69637c66deddeca00c05d7202.zip	194,700,123
		5.1 beta 4	16R5584a		0dc30334f7f66deefabc0f44c1f9dfe62b20610c.zip	194,139,907
		5.1 beta 5	16R5589c		a84014727175d11d6f353e335d93b72ea72d8650.zip	193,709,839
		5.1	16R591		a9fcf77b73e0e346fc031baf8daecd7a91b304ec.zip	189,749,012
		5.1.1	16R600		b1879dc5c352f070abed70b81ad51e5f49650dfa.zip	189,727,735
		5.1.2	16S46		623e0d01d3f77547a8a1555ef450ab3a3ed09e33.zip	88,817,312

Watch3,2

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	53b7d3a9a3f170640ec2169e116f56910069a6f6.zip	112,338,268
		5.1.2 beta 2	16S5046a		2f3364aed143518b0cffc164030acdc7bfc2d9da.zip	112,207,325
		5.1.3 beta	16S5523a		5b47448285ca43095b81be048d6fc11167abe5f9.zip	112,688,891
		5.1.3 beta 2	16S5531a		9140b998126751d40d786e7bf7bd4b780fe9a74f.zip	86,748,215
		5.1.3 beta 3	16S5535a		7dc6ee6a8a4acd37f5796073732d60bbba452aac.zip	86,291,063
	16S535	—			57af8e452aa1b9f6b03ae5df47a1ffdc415008dc.zip	1,431,662,160
		4.0	15R610		ba5c50d38a2f6e9832242edf44b70f4bac9f7d94.zip	861,277,223
		4.0.1	15R654		1f4a83463cf34053a575cf83a57c9f35094fde67.zip	861,268,897
		4.1	15R846		c9b233cdd81a69c449c63757e74a02be4a5eea88.zip	840,291,392
		4.2	15S102		ee9f2cf22798193b0a8c695b54d507d5cf690483.zip	836,992,992
		4.2.2	15S542		d76074d04a4dba1e895370ff3d9e66ecf39a9988.zip	836,961,944
		4.2.3	15S600b		89c1c0c8281d9ea0aee46e1cc0dd5b84291a4789.zip	836,961,615
		4.3	15T212		1da7610f9d66d02c50f9c318b1290984433c7a7b.zip	822,916,864
		4.3.1	15T567		138a207606a025fd27ee2eaa8dd114c5f7a030d7.zip	819,678,988
		4.3.2	15U70		e8aff346156c60a70d09f825a905904274123ede.zip	819,644,501
		5.0	16R364		8c19d290753b0768feea018b9c09864d24de98be.zip	231,861,462
		5.0.1	16R381		4fa5f083acf531e26e3045e444ddaea782f56e8d.zip	231,802,951
		5.1 beta	16R5559d		944baf9b9153a24f502c54b8ba05a4f7a4e2a3bc.zip	225,068,485
		5.1 beta 2	16R5568d		2f8b2c45e2a5b89db6f30e6af4083fd63f24471b.zip	201,469,288
		5.1 beta 3	16R5577c		6a8dbc14c10046d41ccf53888807ef54beb745e7.zip	194,796,337
		5.1 beta 4	16R5584a		0ebbae336ebb4d88a959be4db6cea57047df0cc9.zip	194,208,892
		5.1 beta 5	16R5589c		c63543ec8abc5adbc354b20987274b01566dc301.zip	193,812,660
		5.1	16R591		20f9f7df1f2f38cf8efbeea8976a4cdfc25b8add.zip	189,794,141
		5.1.1	16R600		bfc80f2c5b279e2051b779ae4af4842b46715065.zip	189,800,812
		5.1.2	16S46		e7505dc0c931595617d0cda4cbeeb9358832aeb9.zip	88,853,386

Watch3,3

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	3c43407f891cb7508bacf091a71652e5c09537f9.zip	101,505,993
		5.1.2 beta 2	16S5046a		490e85812bef851ae12c51228208579ca78589d2.zip	101,344,406
		5.1.3 beta	16S5523a		3630e2a5a84cdc8e85f3afd1d786aead3a3267d2.zip	84,459,874
		5.1.3 beta 2	16S5531a		0e9a0083d10678b901fc996f8c83fdde4e297b8f.zip	83,402,027
		5.1.3 beta 3	16S5535a		d6873ed32194923424d96c29dfcd29feb8c54846.zip	82,892,414
	16S535	—			63062ede68a91d62282c3d633b9c96f9a3a4cbbe.zip	1,360,960,810
		4.0	15R607		43999273e219d689eea48cd49fdd69774870289e.zip	826,689,797
		4.1	15R846		0bc4d7ea72771e94bd33435b00392675330896f9.zip	806,289,286
		4.2	15S102		b74905514cf18a7a5d73a27740323b3dd69a5f2c.zip	801,982,296
		4.2.2	15S542		d4a1ecb3cccab50edbf5c459baa69573994dd9c3.zip	801,951,755
		4.2.3	15S600b		cdd1a370c89ec3bd599fce941e4d867a98bf4f9f.zip	801,951,392
		4.3	15T212		1454d4ca8164557dabb024679cd30beaea2d47b0.zip	792,688,546
		4.3.1	15T567		ed2447257e3534f51194ed20b434eb28a4993fcf.zip	787,746,290
		4.3.2	15U70		5d4aa181fcf3cd3178a3c8a4ab453e59ed459e0d.zip	787,721,994
		5.0	16R364		f35d7e47341cf264f35219689eb09406a2fb9c93.zip	197,907,993
		5.0.1	16R381		f148873acdc63b449de0e6419a0fdeb5605c285c.zip	197,871,581
		5.1 beta	16R5559d		67fb5893e5047d990141e4a1c80e7d1edaae9bd7.zip	194,476,563
		5.1 beta 2	16R5568d		bc8d54269aae07e812268f73a15a9e23187b668b.zip	170,674,341
		5.1 beta 3	16R5577c		35ed97ef8b9c57f6def73dca72cd2ad8605a5a23.zip	160,636,220
		5.1 beta 4	16R5584a		c52feea94f2af7c95c6200591c494b26b51d8ba4.zip	160,332,370
		5.1 beta 5	16R5589c		39b24e452e375efda29f6f0dba98bad7c7d19224.zip	159,772,309
		5.1	16R591		aa725d3dd7659f7f9d8a0fadc4070cc5dbde2c3e.zip	155,647,981
		5.1.1	16R600		25cf6cdd4536ff0c12e10b6b80c2e3f15bc1eafe.zip	155,653,729
		5.1.2	16S46		c44d6c40ab5a46c29a8380c9e2eb797f454d782d.zip	79,820,996

Watch3,4

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	5a76b82d5459cc46587934018812a2ee37cf9804.zip	101,559,393
		5.1.2 beta 2	16S5046a		a9165cb242915d23257a3ae123c0a5338f60150e.zip	101,414,807
		5.1.3 beta	16S5523a		4f7286a0524b40be34d158306ad73d5b2c41cd4c.zip	84,518,690
		5.1.3 beta 2	16S5531a		89e64be6e0e7afd1f4882e9cd5f4b3209308a75a.zip	83,369,198
		5.1.3 beta 3	16S5535a		0f953422bfb3090c288c7d027bf38fc279564b35.zip	82,859,323
	16S535	—			82deb360bbdbc57899002799e6795665d6a77e07.zip	1,370,280,664
		4.0	15R607		3dd25e9a44908ab3ea916d5e0229373b2edccc6b.zip	827,603,724
		4.1	15R846		3f98a0d493ec3bb51c267c8c742753b072e0839d.zip	807,186,109
		4.2	15S102		49d6ff07b18279967bc4ef227a04aeaace006892.zip	802,871,586
		4.2.2	15S542		3729abda021a5abb18cf4587f2e0aeb1e7d93585.zip	802,840,914
		4.2.3	15S600b		c8be1ce5be9dfbcca63fe278bafe923cf69693ad.zip	802,842,529
		4.3	15T212		a27e4f5c2441c2ce504ef40a4c93a429f3e926ee.zip	793,338,248
		4.3.1	15T567		115dd482c27186b05263ad33bfdca4955805952f.zip	788,728,534
		4.3.2	15U70		03ab575299305996fe9631d7b9ba10efdf1ed408.zip	788,703,912
		5.0	16R364		71d90baa885a0f6a30935b3923b9b9aacfed9868.zip	197,990,365
		5.0.1	16R381		4ca46e8392ff36b447e69980a77fc5868e565ce9.zip	197,981,672
		5.1 beta	16R5559d		6e2697bb31ad436a09658108961df3a08880fc2d.zip	194,513,060
		5.1 beta 2	16R5568d		c4cea533af0528249ef841f14cc8347416804c0a.zip	170,720,684
		5.1 beta 3	16R5577c		56261937eb5b4223ddc4478dfd3b8cac0168f6b1.zip	160,741,934
		5.1 beta 4	16R5584a		0833de98406b96ad40863e56621ed4780ba7b7b0.zip	160,406,994
		5.1 beta 5	16R5589c		914fe8b25aa52494c67093c9ddd7a9469384eb9d.zip	159,880,155
		5.1	16R591		8af507f967d0de46cd0a457095a6416f4df47628.zip	155,736,217
		5.1.1	16R600		bd7c1b1a3af1616a1edae8a6694c6ceb94ae6bee.zip	155,692,596
		5.1.2	16S46		a67062dad7a3f9607831b5b70f04a2ee5fdd3e9d.zip	79,855,155

Apple Watch Series 4

Watch4,1

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	17a16214a174dc4b7d28a0a74f260dfc6dbacced.zip	86,694,508
		5.1.2 beta 2	16S5046a		3f971d032948c7fe797a50726d884336729dfdc8.zip	86,167,055
		5.1.3 beta	16S5523a		262d2276774838c840ea2f664469d6cde910557f.zip	77,759,963
		5.1.3 beta 2	16S5531a		e96a0e38668f6874224181ce6f2bb7a7224bc7b3.zip	71,299,366
		5.1.3 beta 3	16S5535a		798855f2d6226d8779b65412f9a39c4e4f7b1839.zip	70,170,069
	16S535	—			5efa1b9d556d98b509434625501094453740b165.zip	1,417,704,969
		5.0	16R364		5e9fd7d960f175181f3ac529693004a864b282e5.zip	203,220,030
		5.0.1	16R382		bf1000d5dcefad82287de68f52c1c89c8333cfd6.zip	203,239,007
		5.1 beta	16R5559d		7ecaa9ed470f093d32df48d7f7a7d98bf2b82362.zip	197,192,682
		5.1 beta 2	16R5568d		6a296138649cba696baf2995a6fea8a3bb1dc0ca.zip	173,221,377
		5.1 beta 3	16R5577c		2f1ef5c301979f7b1ebe0a4a8403c2432a18b3ae.zip	157,722,183
		5.1 beta 4	16R5584a		d3afa00f0e8aadef2610c98e2ca0613bff324fc8.zip	157,195,684
		5.1 beta 5	16R5589c		94137bc316b3c934fe1d76436ee8c2959ec550bc.zip	157,039,188
		5.1	16R591		81c86755523717ecd72045cb9f985c878ee57a62.zip	153,356,384
		5.1.1	16R600		bee8a0afe700920d19535f15e9de3041d6f86f41.zip	153,359,858
		5.1.2	16S46		3df09a749857c77f4c355ca95cf7f461ae4a3849.zip	74,240,709

Watch4,2

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	8a5b66e7a86b004672fd59306d836a11b938e035.zip	86,514,718
		5.1.2 beta 2	16S5046a		f0bb36c3c24956b5a569bfdb3ab6d9e99985d52e.zip	86,102,836
		5.1.3 beta	16S5523a		73fbfcbb520f7f8e2658d6e1d1f7cad83f4f7e78.zip	77,909,904
		5.1.3 beta 2	16S5531a		69bc7fbfe3a1635aa5b32b0466c2f3e27f027849.zip	71,445,543
		5.1.3 beta 3	16S5535a		14fa22af39d3cdf08c56e68c6562642c53b93a72.zip	70,307,189
	16S535	—			4394a0b744b81d99db5feb6b12a19cfe3c4d2e4f.zip	1,429,676,242
		5.0	16R364		5a2cda3471f5c02d3374031f25c12078c806349c.zip	203,353,342
		5.0.1	16R382		a7064f9a8729288b9bfec87bd502b9f19464d410.zip	203,346,199
		5.1 beta	16R5559d		4e4418d36eddf5ae5821faa54ff147529d72086d.zip	197,284,190
		5.1 beta 2	16R5568d		dde673a43922e70617c02cd36bd2dd3a2cf97e5b.zip	173,194,385
		5.1 beta 3	16R5577c		e66d8baef31af73d34da1a7ccce807aa09f47a59.zip	157,880,748
		5.1 beta 4	16R5584a		2540f3a6c04090971e5d36b2ffbf1dd3673ae781.zip	157,221,299
		5.1 beta 5	16R5589c		fe197c7ce31bb1c47a14a0ce9b8cb6cf9004b4a6.zip	157,088,213
		5.1	16R591		fd5e8818c8269843d4071a839833f19bc6ee01d1.zip	153,388,198
		5.1.1	16R600		527020af2359c3e9d7fb2c0588532934baa2bbca.zip	153,389,674
		5.1.2	16S46		61c932fc9111ed9d79cc0439348bdb789696dfbc.zip	74,261,553

Watch4,3

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	f371bcc91f0a7d5cefba46f963ba6cb3a4203e94.zip	104,091,271
		5.1.2 beta 2	16S5046a		71f0aa5cb5395fb5d8825c36b7c9dfb69ed864e9.zip	103,592,100
		5.1.3 beta	16S5523a		0399fd751219b843b18af2d42038c2484e37bca3.zip	93,638,837
		5.1.3 beta 2	16S5531a		7eef9a8e0c88d6b2d2e3e2345367319fab1aacf5.zip	76,156,511
		5.1.3 beta 3	16S5535a		6ec546ad2140468cc1817b804e6873e1678c3929.zip	75,073,090
	16S535	—			3c5238738fd5d3c7584e7fc00223f36330cc140e.zip	1,454,338,835
		5.0	16R364		b5377936dbe1d2650f3689117f8b0a50481210cb.zip	221,738,184
		5.0.1	16R382		bccb5fd076df83824414331b96a1ffe239822131.zip	221,718,328
		5.1 beta	16R5559d		03b5ad72f615b20ae5a945e24ef823ab94c05e95.zip	210,710,670
		5.1 beta 2	16R5568d		f2b694cbf8a8d2766a51c00304a1ec4004379e05.zip	186,969,911
		5.1 beta 3	16R5577c		b732f2df88307d718893b72fd5daecce23c46326.zip	174,030,163
		5.1 beta 4	16R5584a		de42944a142bd81c0ab9f7cdb3cf95317ca22afa.zip	173,538,947
		5.1 beta 5	16R5589c		d306f358ccc6cf645506b9194feb71b23cf01235.zip	173,386,089
		5.1	16R591		f622a3d8ec21412f2da2608c8a39645792d7eb82.zip	170,020,806
		5.1.1	16R600		19d487156de5df582ce1ce8d7a835b50c73fa95a.zip	170,005,619
		5.1.2	16S46		9e11581f552c0fe3ea9b92b26aaf3c1ccb5f931c.zip	90,509,442

Watch4,4

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
5.1.3	16S535^[1]	5.1.2 beta	16S5042a	22 January 2019	52fd35cc68c7b8bc6d0e7781fbd15b9e9387196b.zip	104,011,211
		5.1.2 beta 2	16S5046a		7db206420a8d8512947ba48ed0530e7fd828e42f.zip	103,523,434
		5.1.3 beta	16S5523a		fbf260f1e170448e3b92ee255351a6e307add555.zip	93,775,041
		5.1.3 beta 2	16S5531a		559dca0e7f215205722b018ab3d6205501787da7.zip	76,285,878
		5.1.3 beta 3	16S5535a		a423b5c1744e4cbd4840a1e2208563de3d5a8734.zip	75,202,420
	16S535	—			8b7ee66d1c13602a555dace37f8137999fd08aa5.zip	1,466,542,042
		5.0	16R364		ec1d415a49bab1b9561ad94ea67fa641cdd30841.zip	222,004,434
		5.0.1	16R382		f3a3d4fa0674de597e2993cca7b4121713630bd0.zip	221,939,625
		5.1 beta	16R5559d		97ba8719a780ec9d2cc37cb747a9e6dca45658de.zip	210,784,254
		5.1 beta 2	16R5568d		a0beb3ae32fa5ef42a03726b7f87b024ba12e6ea.zip	186,955,313
		5.1 beta 3	16R5577c		b8f72a148d1c7de762be4e2f6672e7791b728590.zip	174,202,173
		5.1 beta 4	16R5584a		e57ad81317690f82fa09f2451512192de8289150.zip	173,575,436
		5.1 beta 5	16R5589c		db9a41cd05d0af7183faa42db6928ed9565b7a6a.zip	173,445,770
		5.1	16R591		46a77b41b57a68f00d5bae2f861e28586f568a1d.zip	170,061,691
		5.1.1	16R600		7bab16b5dba31566767a30079248d4c30546a32d.zip	170,056,151
		5.1.2	16S46		db7137828a902d72a9ead0164fbe467b10305c9b.zip	90,518,290

Notes

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 16S535 was listed as 16S6535.) The listings on this page use the build number displayed on the device.

[inflated-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 16S535 was listed as 16S6535.) The listings on this page use the build number displayed on the device.

[1]