OTA Updates

OTA Updates (Over-the-Air Updates) have been introduced with iOS 5. The device contacts mesu.apple.com to check for updates. The updates are delivered in plain unencrypted ZIP files.

OTA Update Files

iPad

iPad 1G - iPad1,1

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5259f	9023d1ebd320d91b35fb3820b3c2ed0ce42c6d03.zip	Beta		193,443,604
5.0b5	9A5288d	9A5259f	e32a3ed51a0913d882d7e8a87af0623d8f191e60.zip	Carrier		195,891,742
5.0.1b2	9A404	9A402	04d4f2d4537ac918ac3e494788c282bb67001bbb.zip	Beta		39,473,876
5.0.1	9A405	9A334	a10da09644bd17d9ad67e88ba5224b719faa7b95.zip	Release		41,066,648
5.1b3	9B5141a	9B5127c	0ed3620795c3e7c46f9153d15764669ce5b38d3a.zip	Beta		?
5.1	9B176	9A334	0f536b7c0b32a36f211d5ec9de49b5af5a446637.zip	Release		206,257,384

iPad 2

iPad 2 (Wi-Fi)

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0.1b2	9A404	9A402	23289e9f5c752e67cbb650179bc0fdfce9613648.zip	Beta		39,937,791
5.0.1	9A405	9A334	f2ae60b598040fb475668fba346720094187909b.zip			41,300,532
5.1b3	9B5141a	9B5127c	82f69270db293451d9d3b0e9c374ede1237f7212.zip	Beta		?

iPad 2 (GSM)

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	7087529d848729133957d979f54bdebe1c07a7fd.zip	Carrier		148,024,221
5.0b5	9A5288d	9A5274d	0ac25e80cac4b6d12cc7cc2c5ba98d7cc3c03fb9.zip	Beta		146,544,905
5.0.1b2	9A404	9A402	538ae578b5e1e2f6199d5f0f8a3d9072fd907e4c.zip	Beta		48,066,431
5.0.1	9A405	9A334	ed440421275bd52d6748abf3a31837fda03cc086.zip			49,120,994
5.1b3	9B5141a	9B5127c	9d7dfc2b71aaf7c0301c9214a676ddca8c6e95c7.zip	Beta		?

iPad 2 (CDMA)

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	444e2f5f79af95b9601b8871b86cbf9793cd7a14.zip	Beta		142,810,356
5.0b5	9A5288d	9A5274d	58cfede05a3813ecd8446e293eaef7d0cb5ea2ce.zip	Carrier		144,264,157
5.0.1b2	9A404	9A402	f5053274861e6a9144e6540a6ec340aea976ec33.zip	Beta		53,765,294
5.0.1	9A405	9A334	7e7666c0e4ab2dcb0977987da8501dc8f3361644.zip			55,647,323
5.1b3	9B5141a	9B5127c	6affecb981cd973c5c7b534145de95da9ae8c7e0.zip	Beta		?

iPhone

iPhone 3GS - iPhone2,1

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5259f	5f3c1bb45bdf4ec0b34be4554516a09a245bfdb4.zip	Beta		179,789,824
5.0b5	9A5288d	9A5259f	30a65ecc4bd61b2298c28676d025ae4babad337c.zip	Carrier		182,017,013
5.0b5	9A5288d	9A5274d	ff1081181b5647475f62bf5c19c04c0386adb103.zip	Beta		119,114,569
5.0GM?	9A332			Possible GM?
5.0.1b2	9A404	9A402	ae57c4dc797aeb0c6f230172c49ad54de9b75aa3.zip	Beta		39,717,063
5.0.1	9A405	9A334	19f78b3b21dc48a8a5baea455377c134321b5887.zip	Release		40,811,305
5.1b3	9B5141a	9B5127c	ffd65cefb4f892725a2592960f953a31944872e2.zip	Beta		?
5.1	9B176	9A405	0e0e6444cae79c3c809107eb61c3ee6c75c10c2f.zip	Release		110,916,945

iPhone 4

iPhone 4 (GSM) - iPhone3,1

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5259f	05e3a3f0fc43c968f93af8464720c50fbd0ad620.zip	Carrier		193,261,005
5.0b5	9A5288d	9A5274d	cde871abbf88d40ff2de05b729ae7d77299cb718.zip	Beta		135,075,264
5.0b5	9A5288d	9A5274d	af342f8dbdcfb16cecef31b915b172b1b54923ca.zip	Carrier		135,591,402
5.0.1b2	9A404	9A402	accafa6d7e44bac2f21f52e579b20ec877d725e2.zip	Beta		45,464,950
5.0.1	9A405	9A334	18d1ad5c7de11dced1914b59be08eaa2a3e6503d.zip	Release		46,787,119
5.1b3	9B5141a	9B5127c	f7b405cca1af5de58a49c63772e59a8feb17a877.zip	Beta		?
5.1	9B176	9A334	03e5a74f68e6d997820fce4584d4c4b248b7a311.zip	Release		186,113,559

iPhone 4 (CDMA)

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	8f6b3c14f3387b6fe0db08b52338a29d845d3197.zip	Beta		144,482,539
5.0.1b2	9A404	9A402	252a641e24b440a1e8fcdf5a2da3139b19273c9c.zip	Beta		55,140,468
5.0.1	9A405	9A334	f32393169909696c2b3efb2aa9c82b9a7d8ba8b8.zip			56,495,306
5.1b3	9B5141a	9B5127c	d504ee2e5a295880ef9ddef8f2e95749463c5c2d.zip	Beta		?

iPhone 4S - iPhone4,1

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0.1b2	9A404	9A402	554f7813ac09d45256faad560b566814c983bd4b.zip	Beta		839,302,389
5.0.1	9A405	9A334	323d76efa3e44947838dca305cd104ca740dd30c.zip	Release		58,221,403
5.1b3	9B5141a	9B5127c	5e15af51bc7ee8c741d7b25dd1ae7653dcb1efb3.zip	Beta		?
5.1	9B179	9A405	a37da9fd18dd0a40d46192b63ed5069fa4e852c9.zip	Release		198,459,428
5.1	9B179	9A334	bdf35bb991b25d0ecc0e2cfb2d59f99d63082c09.zip	Release		198,658,723
5.1	9B179	9A406	94fbce740b4e3f59f047ce5369c7afb5f806e249.zip	Release		198,383,965

iPod touch

iPod touch 3G - iPod3,1

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5259f	11ad90a32d70e944ec08358cbdd4efdd1034cc6c.zip	Beta		178,581,139
5.0.1b2	9A404	9A402	cce9a9b7d7368a27b6db5e34b9fb057245d3e87a.zip	Beta		39,019,275
5.0.1	9A405	9A334	0dac8a3eb9292d05d013d84ad3c2f6ca5b74c0f3.zip	Release		39,868,989
5.1b3	9B5141a	9B5127c	6997c9f76060dde8071a3c02d07359dd2d702009.zip	Beta		?
5.1	9B176	9A405	470a2df0e401405c9bdc52e627172193fe38750f.zip	Release		110,901,484

iPod touch 4G - iPod4,1

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5259f	d143312070ccc3d4b3758fa1d0b4732ecb20721b.zip	Beta		185,480,615
5.0b5	9A5288d	9A5274d	03351fa4268c0bbaeef301c20c92ea1b2c0bb338.zip	Beta		129,931,195
5.0.1b2	9A404	9A402	97bbaa762247dc9cad795148251fa641cceba24f.zip	Beta		40,140,664
5.0.1	9A405	9A334	ee5492289cb3126be3ccbaf55f9f6cd8eb3d1ccb.zip			42,019,565
5.1b3	9B5141a	9B5127c	e718832f57845f146010545386f1949a1353999b.zip	Beta		?
5.1	9B176	9A334	8af6942d8211bb00fb32b93aafeeba1c4b8e1e32.zip	Release		183,616,163