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

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5259f	9023d1ebd320d91b35fb3820b3c2ed0ce42c6d03.zip	Beta		Unknown
5.0b5	9A5288d	9A5259f	e32a3ed51a0913d882d7e8a87af0623d8f191e60.zip	Carrier		Unknown
5.0.1b2	9A404	9A402	04d4f2d4537ac918ac3e494788c282bb67001bbb.zip	Beta		39,473,876
5.0.1	9A405	9A334	a10da09644bd17d9ad67e88ba5224b719faa7b95.zip			41,066,648

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

iPad 2 (GSM)

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	7087529d848729133957d979f54bdebe1c07a7fd.zip	Carrier		Unknown
5.0b5	9A5288d	9A5274d	0ac25e80cac4b6d12cc7cc2c5ba98d7cc3c03fb9.zip	Beta		Unknown
5.0.1b2	9A404	9A402	538ae578b5e1e2f6199d5f0f8a3d9072fd907e4c.zip	Beta		48,066,431
5.0.1	9A405	9A334	ed440421275bd52d6748abf3a31837fda03cc086.zip			49,120,994

iPad 2 (CDMA)

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	444e2f5f79af95b9601b8871b86cbf9793cd7a14.zip	Beta		Unknown
5.0b5	9A5288d	9A5274d	58cfede05a3813ecd8446e293eaef7d0cb5ea2ce.zip	Carrier		Unknown
5.0.1b2	9A404	9A402	f5053274861e6a9144e6540a6ec340aea976ec33.zip	Beta		53,765,294
5.0.1	9A405	9A334	7e7666c0e4ab2dcb0977987da8501dc8f3361644.zip			55,647,323

iPhone

iPhone 3GS

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	ff1081181b5647475f62bf5c19c04c0386adb103.zip	Beta		Unknown
5.0.1b2	9A404	9A402	ae57c4dc797aeb0c6f230172c49ad54de9b75aa3.zip	Beta		39,717,063
5.0.1	9A405	9A334	19f78b3b21dc48a8a5baea455377c134321b5887.zip			40,811,305

iPhone 4

iPhone 4 (GSM)

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			45,464,950
5.0.1	9A405	9A334	18d1ad5c7de11dced1914b59be08eaa2a3e6503d.zip			46,787,119

iPhone 4 (CDMA)

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	8f6b3c14f3387b6fe0db08b52338a29d845d3197.zip	Beta		Unknown
5.0.1b2	9A404	9A402	252a641e24b440a1e8fcdf5a2da3139b19273c9c.zip	Beta		55,140,468
5.0.1	9A405	9A334	f32393169909696c2b3efb2aa9c82b9a7d8ba8b8.zip			56,495,306

iPhone 4S

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			58,221,403

iPod touch

iPod touch 3G

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5259f	11ad90a32d70e944ec08358cbdd4efdd1034cc6c.zip	Unknown		39,019,275
5.0.1b2	9A404	9A402	cce9a9b7d7368a27b6db5e34b9fb057245d3e87a.zip	Beta		39,019,275
5.0.1	9A405	9A334	0dac8a3eb9292d05d013d84ad3c2f6ca5b74c0f3.zip			39,868,989

iPod touch 4G

Version	Build	Prerequisite Build	OTA Download URL	Type	Comments	File Size
5.0b5	9A5288d	9A5274d	03351fa4268c0bbaeef301c20c92ea1b2c0bb338.zip	Beta		Unknown
5.0.1b2	9A404	9A402	97bbaa762247dc9cad795148251fa641cceba24f.zip	Beta		40,140,664
5.0.1	9A405	9A334	ee5492289cb3126be3ccbaf55f9f6cd8eb3d1ccb.zip			42,019,565