OTA Updates/iPad Air/13.5.1

iPad Air 2

iPad5,3

Users still running older versions of iOS (up to 9.3.5) are now presented with a dummy update file, and are instructed to use iTunes to install software updates.

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
13.5.1	17F80^[1]	—		1 June 2020	aa05f20ac699aa63caf828b3b67fd4463e568ffb.zip	2,848,120,500
	17F80	—			aa05f20ac699aa63caf828b3b67fd4463e568ffb.zip	2,848,120,500
		13.1	17A844		4abfb581760ab465e4ee8365f924779c9d5124a4.zip	1,009,548,286
		13.1.1	17A854
		13.1.2	17A860
		13.1.3	17A878
		13.2	17B84		81eedea9fe466df766e724c2be705a22c9eb89fa.zip	835,957,747
		13.2.2	17B102
		13.2.3	17B111
		13.3	17C54		080c6d264483530895f8b71e366f813efca2de59.zip	823,750,116
		13.3.1	17D50		254163dfcb05348cfa1266728431d8f46b31cd7b.zip	816,086,086
		13.4	17E255		62d18ca726ea98847b3bce0b34e00ba730380f87.zip	275,997,536
		13.4.1	17E262		1407ecefb5a9f93e46e403210f49a0e022b2b343.zip	276,115,449
		13.5	17F75		f652c852bb558ed9c517c803d6e9d291b0f5dcdc.zip	42,368,239

iPad5,4

Users still running older versions of iOS (up to 9.3.5) are now presented with a dummy update file, and are instructed to use iTunes to install software updates.

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
13.5.1	17F80^[1]	—		1 June 2020	cad5a23943d772254fa3b8581f263334a92c5019.zip	2,877,277,765
	17F80	—			cad5a23943d772254fa3b8581f263334a92c5019.zip	2,877,277,765
		13.1	17A844		fb986c5bd8ed3bbb16f72a8ceaaf51452c0baaf8.zip	1,009,493,247
		13.1.1	17A854
		13.1.2	17A860
		13.1.3	17A878
		13.2	17B84		0d7c839ec4277f2bea517d1ba1f80ecaafa55028.zip	835,903,287
		13.2.2	17B102
		13.2.3	17B111
		13.3	17C54		e6a4978d767a97b2b4b2ff81cce98384d84c071c.zip	823,696,444
		13.3.1	17D50		cbe99974f9fcf036db582eed7eb7da4e4fdf143e.zip	816,031,151
		13.4	17E255		2302b6816a770445d994a66c77480d665a3ed487.zip	275,942,835
		13.4.1	17E262		55d4d6c9f93465ffe44b6b464ce1a62148b46843.zip	276,060,919
		13.5	17F75		55aa024a779a5daa25c4768a5e16393751d2fdef.zip	42,313,550

iPad Air (3rd generation)

iPad11,3

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
13.5.1	17F80^[1]	—		1 June 2020	36ffbb00fca4271ce227fee75c26b1b9b632df36.zip	3,271,095,863
	17F80	—			36ffbb00fca4271ce227fee75c26b1b9b632df36.zip	3,271,095,863
		13.1	17A844		88d4405581b7002bae61505a5037839c780a050b.zip	1,169,399,465
		13.1.1	17A854
		13.1.2	17A860
		13.1.3	17A878
		13.2	17B84		78d6beb160b87503bc418c31115c9ba529f8d3a4.zip	964,196,871
		13.2.2	17B102
		13.2.3	17B111
		13.3	17C54		1c4ce58c8918ab10832c39c87c978a19cb664128.zip	950,656,721
		13.3.1	17D50		da1e837e20201350887207c4a5d28b64161b3f3e.zip	941,159,151
		13.4	17E255		2ff4a1e01efae28cf3a76e3d8fcc63dd98dc697e.zip	328,285,280
		13.4.1	17E262		0900777154595eafbc70b3fd56a26cd4070a4de3.zip	328,308,604
		13.5	17F75		6ff6b7992a73547973792fdc09c719292d8fb740.zip	64,201,337

iPad11,4

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
13.5.1	17F80^[1]	—		1 June 2020	43b423d2c54b00f49c2094992de87afb07222f2c.zip	3,311,806,905
	17F80	—			43b423d2c54b00f49c2094992de87afb07222f2c.zip	3,311,806,905
		13.1	17A844		ab2d9bb67dbaadc57211d9752b3a60487b649165.zip	1,175,056,416
		13.1.1	17A854
		13.1.2	17A860
		13.1.3	17A878
		13.2	17B84		e198c2b80e37d255bd6f1943be741b7b89390736.zip	969,857,137
		13.2.2	17B102
		13.2.3	17B111
		13.3	17C54		a76a4d9b40c0b78602a85b4c78f3a87ad36d55ec.zip	956,315,577
		13.3.1	17D50		61382b69e9f80fc609f66540a1b6a9070e102bfa.zip	946,818,544
		13.4	17E255		94d209f7d722fe1a72230cb98ba841be80d77dba.zip	333,945,255
		13.4.1	17E262		b226df669d8142393df4d17952c64eb71f015927.zip	333,968,480
		13.5	17F75		eb5e8dc78acf54820db969fe84b1b55618f3a2cc.zip	69,859,708

Notes

^ ^a ^b ^c ^d Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 17F80 was listed as 17F6080.) 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. 17F80 was listed as 17F6080.) The listings on this page use the build number displayed on the device.

[1]