OTA Updates/iPhone/9.1

From The Apple Wiki

Users still on iOS 5.1 through 7.0.6 must update to 8.4.1 via OTA prior to installing OTA updates for iOS 9.0 or newer. Exceptions to this are iOS 6.0 on the iPhone 5 and devices that were introduced with iOS 7 (iPhone 5c, iPhone 5s, iPad Air and iPad mini 2).

Users still on iOS 7.1 through 7.1.2 may update to iOS 9.0 or newer, but appear to be given a dummy update first.

iPhone 4S

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) f27cc7d37e1e4051bea2a440e02caa2a5a795063.zip 1,175,302,119
13B143 7.1 11D167 391da5dbeac27101ed37aab0e2bae52213eb0ccb.zip 1,007,105,709
7.1.1 11D201 f40afa6fb912b48b83d4562868976887d4d9e761.zip 1,007,099,440
7.1.2 11D257 e2d2bbff7e7cfbfe624d931e56bab341c1daf02a.zip 1,007,179,087
8.0 12A365 dc10a412b45575249b918a1ef962386d9fb2a2b5.zip 939,950,778
8.0.1 12A402 4b76ad5df2491b53f027330ef6743c991351b0bc.zip 938,323,252
8.0.2 12A405 59278d77aff10b2fd8f8071f885a4be234a86797.zip 938,324,820
8.1 12B411 b761132ff2682983fe3bf8bd8d9e49226530a905.zip 937,556,760
8.1.1 12B435 82bee6be9e52d70029acc130d7b8a3b79ded4ead.zip 934,764,980
8.1.2 12B440 14fc736928c6d6247df49587a04cd8827f4dcc21.zip 934,767,306
8.1.3 12B466 e0a04616a9566df462ce99d5166977ee2bfc783b.zip 934,733,738
8.2 12D508 6204e93d3b52e83abfa63225224f072ccd1ac131.zip 891,679,335
8.3 12F70 c41bdeb76e8f68f6b5015965b4be43a1ba68f1ef.zip 854,108,144
8.4 12H143 b16de69b233c43099cfb050339855d93f810640b.zip 851,883,975
8.4.1 12H321 ceb178e69c0b9d551e21476204d8ca7af7749a29.zip 851,776,507
9.0 GM 13A340 cf0f748186000d6c39106c53fb7f92cc9b39b05f.zip 182,900,936
9.0 13A344 874018deb9238477d4b600bb40869f17892bf36c.zip 182,875,274
9.0.1 13A404 58bb0f75d9eac58e8eb2a708b57fc1c623a4497e.zip 182,820,799
9.0.2 13A452 6bc5e8297878e402cb81d2f09db9e76d65249fd8.zip 182,852,800
9.1 beta 5 13B137 17ca2e4f8dbb6336057b59786629253082f5e5a1.zip 20,703,144

iPhone 5

iPhone5,1

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 3378710e1f0029008ee19772c2a20f606c120d97.zip 1,250,154,223
13B143 7.1 11D167 abd115eddc9eba358fa9bc3e0cc0483038aeefca.zip 1,081,840,378
7.1.1 11D201 66c64a598f4e7fbfe14a40a686edc595ff9c0460.zip 1,081,837,619
7.1.2 11D257 701e0bc9482030ca00d38590b8c01e53ea9f132b.zip 1,081,861,632
8.0 12A365 d56e572e49dab05c247b121956692c213333828e.zip 1,012,523,004
8.0.1 12A402 c742d65f30bcd26d6a5d016d4eaa2e3825cc6e93.zip 1,010,847,011
8.0.2 12A405 d513f6756d04c2114282357c308459430235b9b8.zip 1,010,849,184
8.1 12B411 f716119cc727d4334e1e8359a2e434480afeaf88.zip 1,010,798,912
8.1.1 12B435 b396a0b64e160666b68dc6bba59cfad02b8eaf55.zip 1,008,211,305
8.1.2 12B440 25d43561f8820742e2d5920cd26881e5c92e2dd9.zip 1,008,211,775
8.1.3 12B466 40bb3204ae948c3197cdbd81c9c7bbb86acdcba0.zip 1,008,136,558
8.2 12D508 872bd75fa8b9d37daba15fe1ef761971aa209287.zip 947,758,882
8.3 12F70 67c0d9a82d6aa178930d135dfa078cdf5e5bde58.zip 907,470,576
8.4 12H143 c967a94bf77ae182d3d3d4eb17fe05ce0a250943.zip 904,072,326
8.4.1 12H321 f3aa34dd5eaf16bcc21b5c9cc53e853767098391.zip 903,977,806
9.0 GM 13A340 65ede2b6a97305bdd9380d28449a707f81257327.zip 187,296,791
9.0 13A344 2da28ee996508ca6349e61c0ff637da493373014.zip 187,273,068
9.0.1 13A404 f2599942f699cd5f6e9ac6730a9a237539b88a06.zip 187,233,486
9.0.2 13A452 c1277e1e570becd32ba9b38b225c05de7f385ca0.zip 187,174,546
9.1 beta 5 13B137 9d5be82a5aabf565f460e0e63779b7f7158f1e84.zip 21,445,423

iPhone5,2

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) f25a05357c8cd2e2ec2827e742afc192d2bd8258.zip 1,250,060,630
13B143 7.1 11D167 6af361d6bf1241d7ed600cab8ccd86c286016005.zip 1,082,113,779
7.1.1 11D201 a7e43e62ecc2845d8383f03306e00b6741338baf.zip 1,082,106,042
7.1.2 11D257 b13c7ff22baccb28621a350538cdd0a154309ce4.zip 1,082,045,534
8.0 12A365 ca81f67a3985bb2b948bc22a8f9ac0d574f35a16.zip 1,012,687,359
8.0.1 12A402 8bd98a0889bba61aafddbc49576b0544a4ff29a0.zip 1,011,003,978
8.0.2 12A405 1431824e0e8839f3204b85e9b08997b1bc9a3677.zip 1,010,970,052
8.1 12B411 363465a7a4ab2fd12cd733cc22e9fabab4512047.zip 1,010,921,044
8.1.1 12B435 72b4d48d2d9afd84d444762e259134229521209a.zip 1,008,376,139
8.1.2 12B440 e4f6415a9b0efca0801c229952654f177781a216.zip 1,008,369,050
8.1.3 12B466 8199463fcd1877d3f5040d1449ca754ad462446f.zip 1,008,293,761
8.2 12D508 4609a364cb35289fc968ef746f7bd783148f1d48.zip 947,885,692
8.3 12F70 a6e2ad934ee65a9af1c4a3c87a0a422de0f45197.zip 907,531,513
8.4 12H143 a687f7070cd77474b092a0625b0c13be03efac10.zip 903,612,854
8.4.1 12H321 328840e63d23ed5ea0d2ec0945334bc5d9a60c5e.zip 903,490,579
9.0 GM 13A340 a4cf968dcafffe5fbbf1bdbdc497be8d3f8afce8.zip 187,383,158
9.0 13A344 ec80fad2f5dc77445657d1557f6eb3562d98bfdb.zip 187,361,425
9.0.1 13A404 337bed79951536bd0c5376e68a97ed87871705c9.zip 187,311,472
9.0.2 13A452 00050a25348717314960031ea251cb2cc197d36f.zip 187,246,056
9.1 beta 5 13B137 5c799c1139270e8796a95073b7747905ab20914b.zip 21,485,296

iPhone 5c

iPhone5,3

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 67bf8ff41ff4b1479afc27ac37107e6e4f97c2ee.zip 1,261,120,643
13B143
7.1 11D167 00c5fc73fe46a707b269c443d758af60cf843120.zip 1,088,482,751
7.1.1 11D201 cdd2a3c7ad96628ddc8a38db5d7522c508b6da8a.zip 1,088,482,038
7.1.2 11D257 db0ae2576af82df83d13fded6358f9031db5cdc1.zip 1,088,411,593
8.0 12A365 66f56a5b9afcf4cdea021435268c4a35eb749646.zip 1,018,617,670
8.0.1 12A402 0ee70fda3d7f54f32ff0d644917825fc5d401ef6.zip 1,016,958,227
8.0.2 12A405 1cb62ff060c7448f072fe255ef5652877ab9c9dd.zip 1,016,959,676
8.1 12B411 7a8bc3cc836decaad48a1da3b856750f77dd511d.zip 1,016,852,642
8.1.1 12B435 9f1e93166aa9319b06a36f3f05a7878eb87f7104.zip 1,014,273,965
8.1.2 12B440 095c06c1dc3d30bf52fb3b887253fcbb5adff388.zip 1,014,273,501
8.1.3 12B466 6c3301a48a2bbbcc27e3140569fcc6e6f93c15f1.zip 1,014,200,594
8.2 12D508 e18f63579edf33b4395332d85230d9883ee6a7d6.zip 953,916,685
8.3 12F70 4d5c1b4912633cf4a15dd28474e776af80eddb4e.zip 911,206,506
8.4 12H143 0cda85528f94c9618f0cb33eeb1704da58ad12b8.zip 907,533,648
8.4.1 12H321 730eff25c1f4e023e402c3353bfd666ba4a540f6.zip 907,389,703
9.0 GM 13A340 bb15e48d6e6ca263e172b0a5fe0cdb9d204444a3.zip 205,091,269
9.0 13A344 13f48852897c5ae3ea82c42eecd1d989709a7f69.zip 205,062,050
9.0.1 13A404 2ca19f7931866a8156d07bfeb00c889798d9bd82.zip 205,018,929
9.0.2 13A452 1fdf782590144b0d13e30e0698caae3cde596b24.zip 187,465,479
9.1 beta 5 13B137 b2c8f0c6958aa6d4d204209127e87de8e337ed0c.zip 21,592,668

iPhone5,4

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 9bd15ff5299a7d4c00c0efe7fe51ada72408f3cc.zip 1,260,930,155
13B143
7.1 11D167 fcab2c72c8286b0c28550c081e197ca9a41b0002.zip 1,088,348,859
7.1.1 11D201 31bc73c69bf8ae8646b6f0909434f10c6329eba8.zip 1,088,345,755
7.1.2 11D257 276432565c96e1f3a72f35a6aa192aca762afce3.zip 1,088,290,095
8.0 12A365 3dc30b4e3ea5a1de152184ff995cd2f5442d6582.zip 1,018,522,946
8.0.1 12A402 f289dfdb0b1198f8b5cc1e0f5839f63536df2fd4.zip 1,016,834,162
8.0.2 12A405 1f3a808ab14658d45e090ff81e78ff186f76853f.zip 1,016,828,033
8.1 12B411 86e513cdb50320a14eb6d5e87117a6c61c42603f.zip 1,016,809,747
8.1.1 12B435 637043175cc7fd909c9fa774cce65447d3e04026.zip 1,014,156,614
8.1.2 12B440 f532d6c0ea53fcb4c8c7f3c3bb122f723140c2aa.zip 1,014,157,929
8.1.3 12B466 905dd1a5bc4577c7bddfdc4ea0bd152f92a324d3.zip 1,014,108,787
8.2 12D508 1de1b356a8b1ffbfa36ffa939b710a41557996f4.zip 953,880,703
8.3 12F70 b132cb48240df0ff3b611acfbda6a566eb72ea6c.zip 911,101,587
8.4 12H143 f0b45553b9fa056a15307b752256d7133332239a.zip 907,324,255
8.4.1 12H321 8f602f24f79a2c287e3e0b7ef2bcb5a2cf3a71d4.zip 907,210,615
9.0 GM 13A340 a7d5340c80311ff39d18608d9e69079b09170d78.zip 204,974,893
9.0 13A344 0f3458d36721e77396e814068cb4058f59c936b2.zip 204,943,421
9.0.1 13A404 d0cf4f7807e8a68accecb3b5794d5b5ef3468ca0.zip 204,898,287
9.0.2 13A452 e3b1a824a67a870689dfc64d518b7df5b5c65a06.zip 187,353,174
9.1 beta 5 13B137 4ea620c7a3e46adf4838e8daeea9ae2188a8dc2e.zip 21,538,096

iPhone 5s

iPhone6,1

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 2a2c15d4a737e6d4d712d2b24b0608ab22b6e964.zip 1,424,517,984
13B143
7.1 11D167 0abc5d1d6cb6b8e3fb714760d1ded2ad9d28d56e.zip 1,250,505,286
7.1.1 11D201 c7ab02a93f667d699592bbf85bf35f085a1a3ec4.zip 1,250,492,744
7.1.2 11D257 21eb82829bce2dec0ea99ecb3bb23d91b1a7acdc.zip 1,250,504,347
8.0 12A365 1b4952c17abbeb45afacd08bae5c4b366b0c1dcf.zip 1,177,235,506
8.0.1 12A402 dd3a6085157c7aaa034ac38b92750e3deee07b64.zip 1,175,867,538
8.0.2 12A405 0581848b7c1c4ed33b2142bd9ba784af8d710f2c.zip 1,175,866,619
8.1 12B411 2091fa80714bf3f3efd72932671cc2856a450516.zip 1,175,532,369
8.1.1 12B435 dec1320f27b764af3076de176675255a0b9a77cd.zip 1,172,331,465
8.1.2 12B440 4883a7d89123658b642e8aa011815e6fe93af541.zip 1,172,325,089
8.1.3 12B466 2deca0bdc735eef81136a52d0a2e64324ad91338.zip 1,172,321,112
8.2 12D508 78337ee42a8a96af0229c9b860a682a6c889a076.zip 1,113,505,668
8.3 12F70 818f25e7e55bec25e64ccb224251e0807914989d.zip 1,069,072,848
8.4 12H143 057eb0f57bdf2fb2166e74d650f5913c0ec43f81.zip 1,063,390,142
8.4.1 12H321 1e57f72fdc1e5f88283e30a588521532e399bab5.zip 1,063,297,850
9.0 GM 13A341 86149bda09f07616bbacd50faecc0fa483e39c0d.zip 247,958,497
9.0 13A344 0d3caf7885caab48396cea47eca830b09b3c63c5.zip 247,770,679
9.0.1 13A404 b7f63489ab087dcf11885b8dde7432f3d62d24ff.zip 247,919,080
9.0.2 13A452 8488d3d50a9a5c4354bb2e75f6b2145890adf259.zip 230,236,692
9.1 beta 5 13B137 b7413edbd33db3eed8727bfed13a9ec819cd64d9.zip 30,500,969

iPhone6,2

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 124c40a49eb121a95384b04458fa0722ef297530.zip 1,424,106,312
13B143
7.1 11D167 32dc086d55307f9e7fe72596c222dd2450b7493a.zip 1,249,304,856
7.1.1 11D201 ffcb57d906e0ba141104d90e480f50819785a290.zip 1,249,288,514
7.1.2 11D257 e9131649c18ef561f09d1c3876228b478286b5db.zip 1,249,299,113
8.0 12A365 721dd6e1f6f04051449d61a684803e00b4b30086.zip 1,177,205,098
8.0.1 12A402 2fb0f1d1182299d29768145af675fc5d67174453.zip 1,175,807,277
8.0.2 12A405 f70b15df7142adabaf03956cffa776cf0486301b.zip 1,175,823,127
8.1 12B411 18f1aff048cd348e6b414bc474e0cd0ca7da9942.zip 1,175,480,146
8.1.1 12B435 e6a1677f1e31a3d2b4e0bce175892ad3c605eb99.zip 1,172,251,060
8.1.2 12B440 70e3f2a8a8a5a2f6e0b8e856027d51e624a56915.zip 1,172,229,408
8.1.3 12B466 158cf5cdfeb3298595a0c7db19d26bbb87468f6c.zip 1,172,240,904
8.2 12D508 40532b94130c51d286bfab4e735a8d2f05163c22.zip 1,113,332,051
8.3 12F70 b9ef7097dcdd2b5862daa9d451adef09b48b04c9.zip 1,068,179,578
8.4 12H143 1dad05cc0597ace691c7eff0c796c5291fd1ff8c.zip 1,063,225,682
8.4.1 12H321 2637a25fe59898f5aca852539bae1abb2e0626e1.zip 1,063,153,205
9.0 GM 13A341 e3a8f7e76788dbe0b22795b12aefc00f9f09d5dd.zip 247,822,958
9.0 13A344 0db14f1fa5b991c04207bc80afaea3896048d73d.zip 247,659,599
9.0.1 13A404 8f9661f9928ebab2951e397bcd883d7a1bb2b8ab.zip 247,804,179
9.0.2 13A452 bce886a5331c9b3ed02d4c83e54e1bd15d326e0d.zip 230,124,185
9.1 beta 5 13B137 8f216babeabb74935ce41908c2c69141d452f88d.zip 30,453,310

iPhone 6

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 9e39d9c77d2983147482591e588045071e083786.zip 1,452,484,389
13B143
8.0 12A365 04d92c170ff2fa59464a204976c8a5a2da97e8c3.zip 1,201,194,215
8.0.1 12A402 8788abbc5bd33acfb06d9b32958e2404ddd0706e.zip 1,198,169,829
8.0.2 12A405 95d98b96066b2ab398b2af23eba0537ffa29a745.zip 1,198,161,938
8.1 12B411 e824627f42f2a7160f5c566b806e752a3353eaa4.zip 1,197,325,532
8.1.1 12B436 2c35ef24798a822c80b0d2175caa3bf1b43c0a77.zip 1,194,027,895
8.1.2 12B440 a77da1d6bdd459a337d52d748b4d1b132cbeb237.zip 1,194,055,084
8.1.3 12B466 c212a6b3ebc2d2d042cd02f990e2214e8f5d544e.zip 1,194,030,070
8.2 12D508 a67f3fab13b6bc101017a39224c133e330c77c84.zip 1,136,057,775
8.3 12F70 3166813ac3e5b51cc704131d6e3d44a861a7106c.zip 1,093,389,651
8.4 12H143 fd2b9f2964a9c7d023e3b37ded0c9fb4056aa2e9.zip 1,088,575,050
8.4.1 12H321 5b8249b9866cee0022a9e825b21ea0eec389e83c.zip 1,088,461,595
9.0 GM 13A340 f6f56965c96944a4ff9fd47a0deac41b4530d050.zip 259,214,788
9.0 13A344 71d517d392f19a80013d74297cf4f4abdf795af8.zip 258,900,014
9.0.1 13A404 6141129196838c46483d1f2143ea9711fdad2971.zip 258,997,810
9.0.2 13A452 523ff5cd3711adca0d0e6ad96b2cb1babb2dffd7.zip 258,691,363
9.1 beta 5 13B137 993f1bb141d053e4be20dc28cff371b5f8f4bff3.zip 31,692,707

iPhone 6 Plus

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 80c901f7e0bfeba51739d11538bec66396942229.zip 1,670,011,103
13B143
8.0 12A366 3f70507c47e59b6a2c0a7a1dd5764a68d59beb5e.zip 1,412,904,842
8.0.1 12A402 cf98ca704c7ed86e383cfb7acfabf7f5f49c5178.zip 1,411,933,233
8.0.2 12A405 ddc9ea5a11c6c81210e3cf6bb185808ed3658653.zip 1,411,921,051
8.1 12B411 12c74741f19a8a1adabf236de084562986704e13.zip 1,410,826,322
8.1.1 12B436 e08f4d560c657582344ab13ca4e693da42be8af0.zip 1,407,342,146
8.1.2 12B440 786d61ed181119202387f365c30f5f1dc8616298.zip 1,407,354,382
8.1.3 12B466 07dc4f32d9400e2265eca01284d987058e771899.zip 1,407,302,967
8.2 12D508 ae41aaf7ee74e43733095b7d80c9f81b93535148.zip 1,324,133,149
8.3 12F70 42caa0b057460c8c37edbdb46be2e8b885ca8865.zip 1,280,154,780
8.4 12H143 10e11a6c98103a60e813ce9743e3dcd47ab44e48.zip 1,276,648,757
8.4.1 12H321 18ad88294fd6e43ad05ce48d01db3779df9774c5.zip 1,276,574,471
9.0 GM 13A340 8bd0dff8c3707bcf3f79270384faaa28d1a422e1.zip 323,283,531
9.0 13A344 c39fb3a7fc53f2d4d2df4beb3f03a7f3c3b661d2.zip 322,979,488
9.0.1 13A404 1c64a40c9c9ab32d88dbec58cafaf9226939dbc0.zip 323,066,864
9.0.2 13A452 2f1a43503d0892a1cde899a0e23cdf892fb90d66.zip 322,757,361
9.1 beta 5 13B137 612bc3468821c6f1b0574b84c4b39750c034c58a.zip 32,087,425

iPhone 6s

N71AP

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 2d5c7d1aae50e1d9348471476c17f251623ac489.zip 1,536,458,393
13B143
9.0 13A342 e9472c2a0c3fcea9939a53d58ac42503ad2359e0.zip 264,726,287
9.0.1 13A404 5295ea1a962d93ae433b64f6d9738fc053e685bd.zip 264,411,563
13A405 c80bd2b957d122809b937b06f20b4710b82a8fd3.zip 264,322,914
9.0.2 13A452 61eb0d4637bfb2220608110ef1b5a96b1566531b.zip 264,444,696
9.1 13B139 a701cb5869377fe473d37b630c0c21fc3d903ada.zip 32,355,265

N71mAP

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 65a44fdccb198fa2fc48ce54f27e8430733c2345.zip 1,536,442,591
13B143
9.0 13A342 a1bf1eec6976a0d25b56ecc614ad5362bc25be2c.zip 264,710,437
9.0.1 13A404 1a6dd8dcf364fdd58bf7dbe5471af9a142e06271.zip 264,395,538
13A405 80f3e07f32984cfb535fc4156c623171a92c681f.zip 264,307,143
9.0.2 13A452 29133f8052f6dc59cec4ae1d6fdcdf0a0460b4d7.zip 264,428,709
9.1 13B139 eff9f99e0c7e119fbb1fc4709265579d2c96dd16.zip 32,339,317

iPhone 6s Plus

N66AP

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 675a437584e7a1c322eed93567d2dc991b708302.zip 1,763,626,652
13B143
9.0 13A343 0aa706940113160d78bc97b3a4293be3213670c8.zip 328,916,437
9.0.1 13A405 7a9e41b6c9c0e11c5c02be8deebe8e7bdda65f8d.zip 328,714,004
9.0.2 13A452 d37e9e49a9ae71bec199d485ed00600070ea8345.zip 328,833,016
9.1 13B139 0dc8f554b39768e4ebce4268427e46f70160dccf.zip 32,844,347

N66mAP

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
9.1 13B143[1] 21 October 2015 (2015-10-21) 6177daa0c8fb4399f84e24b2c65650b68adcb069.zip 1,763,610,905
13B143
9.0 13A343 0c8a9f414d0ff457a21c6a3405adb7ccb09a43a3.zip 328,900,636
9.0.1 13A405 7cb3d86385dc034686a2430a4f3a02544c0a6ce6.zip 328,697,870
9.0.2 13A452 d553079ce5b293e41b3929024c84ec2fe146b02e.zip 328,816,989
9.1 13B139 0be56c81ff8b8abe316ebfefe3facad890ccefa4.zip 32,828,470

Notes

  1. ^ a b c d e f g h i j k l m Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 13B143 was listed as 135143.) The listings on this page use the build number displayed on the device.