OTA Updates/Apple TV/11.2.1

Apple TV HD

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
11.2.1	15K152^[1]	—		13 December 2017	b107afae9d9d6f1a066a77f00f77d72bbd144ca9.zip	1,233,217,785
	15K152	—			b107afae9d9d6f1a066a77f00f77d72bbd144ca9.zip	1,233,217,785
		9.0	13T396		e8bccdabfc1e5cf359cdb213609c6fc1bead7095.zip	1,006,615,244
		9.0.1	13T402
		9.1	13U85
		9.1.1	13U717
		9.2	13Y234
		9.2.1	13Y772
		9.2.2	13Y825
		10.0	14T330		d163115fd24f92a332b72b1940f329745ade046a.zip	727,988,787
		10.0.1	14U71
		10.0.1	14U100
		10.1	14U593
		10.1.1	14U712a
		10.2	14W265
		10.2.1	14W585a
		10.2.2	14W756
		11.0	15J381		eb117a1ef82e10d6b33360652009ddc742088fa1.zip	323,874,534
		11.1	15J582		eb117a1ef82e10d6b33360652009ddc742088fa1.zip	323,874,534
		11.2	15K106		1e1ca5aec955798f560f69914bce30a834f33ba0.zip	35,928,195

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
11.2.1	15K152^[1]	—		13 December 2017	7d8de37145ef91fa2761b8ac31aed1d523e06d65.zip	1,462,915,023
	15K152	—			7d8de37145ef91fa2761b8ac31aed1d523e06d65.zip	1,462,915,023
		11.0	15J381		d10aba919bcc25316cbc23722b5c37df29f46827.zip	496,712,468
		11.1	15J582		d10aba919bcc25316cbc23722b5c37df29f46827.zip	496,712,468
		11.2	15K106		d02064a13fe16a7f04da7a0f57070ce9993c7500.zip	36,736,247

^ ^a ^b Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update. (e.g. 15J381 was listed as 15J6381.) The listings on this page use the build number displayed on the device.