Beta OTA Updates/HomePod/17.3

HomePod

AudioAccessory1,1

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
17.3 beta	21K5625e	—		12 December 2023 (2023-12-12)	6c104e44dfd3c12cfcd97e3985ec70a6bc98cbe1.zip	2,559,825,956
		17.2 beta 3	21K5348f		f3ccc0e213de91152c4a7bb97a5b292cc45842ad.zip	217,734,594
		17.2 beta 4	21K5356c		1afacca4029ce0c0c19a2a217eb10be91d6ec02e.zip	197,182,357
17.3 beta 2	21K5635c	—		3 January 2024 (2024-01-03)	1049bbb6804c443f5813f924846e7bea74852f17.zip	2,558,941,141
		17.2 beta 4	21K5356c		a6dd2d1b4b159d71df9a339ea7e0e2f5cbaa1036.zip	222,178,307
		17.3 beta	21K5625e		05290d2221c11f732ef65bf449978fed2d0cccd0.zip	176,472,698
17.3 beta 3	21K5643b	—		9 January 2024 (2024-01-09)	127484d8c49fbdc1656dfb8393b22ad96e75dc30.zip	2,556,736,413
		17.2 beta 4	21K5356c		a5833a657494c2efe8c4d51ba45a32465f906a76.zip	214,089,186
		17.3 beta 2	21K5635c		646d33f6ebdd53e3d66bf55963d9686b33f47a12.zip	169,362,882
17.3 RC	21K646^[1]	—		17 January 2024 (2024-01-17)	ab025b6a89251860a2ce1db1b0ffd5a655332cef.zip	2,557,099,861
17.3 RC	21K646	—		17 January 2024 (2024-01-17)	ab025b6a89251860a2ce1db1b0ffd5a655332cef.zip	2,557,099,861

HomePod mini

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
17.3 beta	21K5625e	—		12 December 2023 (2023-12-12)	8b2ebec5b8d060d87e2acee8161b1ea6a690b080.zip	2,576,376,643
		17.2 beta 3	21K5348f		873e24ea3d6ed9881b81a684590c3494d9dcb811.zip	248,760,532
		17.2 beta 4	21K5356c		d57df5e6bf18a137a6092bc805dd5a73766455e5.zip	223,709,592
17.3 beta 2	21K5635c	—		3 January 2024 (2024-01-03)	cbb4ecc3a1fb346fa936826a52aef5a04417a386.zip	2,575,522,931
		17.2 beta 4	21K5356c		d12ddd2b5868100a234b0114a699482525178479.zip	245,829,435
		17.3 beta	21K5625e		bb7b19c069cb2df5ae652792515b52137b15c20b.zip	174,732,175
17.3 beta 3	21K5643b	—		9 January 2024 (2024-01-09)	6e7ce38bd580e9f7a045f7eaec7526da8f54c43e.zip	2,573,365,482
		17.2 beta 4	21K5356c		2b39d5715b9a2c01d6b13a4e59e328e341bbe177.zip	199,291,742
		17.3 beta 2	21K5635c		fa9aff1babadd1cac33cebd8906799061990dee5.zip	325,066,258
17.3 RC	21K646^[1]	—		17 January 2024 (2024-01-17)	f11092ee62473ec96b5795a81fd7f52e99b917d9.zip	2,573,715,464
17.3 RC	21K646	—		17 January 2024 (2024-01-17)	f11092ee62473ec96b5795a81fd7f52e99b917d9.zip	2,573,715,464

HomePod (2nd generation)

Version	Build	Prerequisite Version	Prerequisite Build	Release Date	OTA Download URL	File Size
17.3 beta	21K5625e	—		12 December 2023 (2023-12-12)	c992651de5503d13206fcdc802aca6e06bde65b3.zip	2,578,580,852
		17.2 beta 3	21K5348f		e6f007372e8bf2234bf215459b657a45aa304b1e.zip	248,552,597
		17.2 beta 4	21K5356c		92c4a81b9885835e5a6880ef08633e5b50a018ed.zip	223,384,076
17.3 beta 2	21K5635c	—		3 January 2024 (2024-01-03)	660dce370f5c51876414c6e9cd5640e8d33fd6b4.zip	2,577,961,678
		17.2 beta 4	21K5356c		d912891d4038a5780c9da6a2de541d12e31644d0.zip	245,599,291
		17.3 beta	21K5625e		789227f603ccee895b2f2d78b81397a1b226f55e.zip	174,556,606
17.3 beta 3	21K5643b	—		9 January 2024 (2024-01-09)	ae1802677d8d0d4217eba7ccdfc4c7b6befed12b.zip	2,575,417,399
		17.2 beta 4	21K5356c		68843be915dad9bdd220af2953ff835fad6c968c.zip	199,089,997
		17.3 beta 2	21K5635c		e35d2a8e605db0ccad7c616410915ed664abe16b.zip	324,123,613
17.3 RC	21K646^[1]	—		17 January 2024 (2024-01-17)	b169bacd938d58b5259aa95eefb688cb48b96f75.zip	2,575,876,109
17.3 RC	21K646	—		17 January 2024 (2024-01-17)	b169bacd938d58b5259aa95eefb688cb48b96f75.zip	2,575,876,109

^ ^a ^b ^c Apple inflated the build number in its mesu.apple.com listing, presumably to make the device recognize the update.
(e.g. 21K646 was listed as 21K6646.) The listings on this page use the build number displayed on the device.