Beta Firmware/Apple Watch/4.x

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Apple Watch (1st generation)

Watch1,1

Version Build Keys Release Date
watchOS iOS
4.0 beta 11.0 beta 15R5281f Watch1,1 5 Jun 2017
4.0 beta 2 11.0 beta 2 15R5307f Watch1,1 21 Jun 2017
4.0 beta 3 11.0 beta 3 15R5321h Watch1,1 13 Jul 2017
4.0 beta 4 11.0 beta 4 15R5331g Watch1,1 24 Jul 2017
4.0 beta 5 11.0 beta 5 15R5345g Watch1,1 7 Aug 2017
4.0 beta 6 11.0 beta 6 15R5357b Watch1,1 14 Aug 2017
4.0 beta 7 11.0 beta 7 15R5365a Watch1,1 21 Aug 2017
4.0 beta 8 11.0 beta 8 15R5371a Watch1,1 28 Aug 2017
4.0 GM 11.0 GM 15R372 Watch1,1 12 Sep 2017
4.1 beta 11.1 beta 15R5823c Watch1,1 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch1,1 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch1,1 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch1,1 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch1,1 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch1,1 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch1,1 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch1,1 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch1,1 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch1,1 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch1,1 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch1,1 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch1,1 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch1,1 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch1,1 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch1,1 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch1,1 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch1,1 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch1,1 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch1,1 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch1,1 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch1,1 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch1,1 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch1,1 14 May 2018

Watch1,2

Version Build Keys Release Date
watchOS iOS
4.0 beta 11.0 beta 15R5281f Watch1,2 5 Jun 2017
4.0 beta 2 11.0 beta 2 15R5307f Watch1,2 21 Jun 2017
4.0 beta 3 11.0 beta 3 15R5321h Watch1,2 13 Jul 2017
4.0 beta 4 11.0 beta 4 15R5331g Watch1,2 24 Jul 2017
4.0 beta 5 11.0 beta 5 15R5345g Watch1,2 7 Aug 2017
4.0 beta 6 11.0 beta 6 15R5357b Watch1,2 14 Aug 2017
4.0 beta 7 11.0 beta 7 15R5365a Watch1,2 21 Aug 2017
4.0 beta 8 11.0 beta 8 15R5371a Watch1,2 28 Aug 2017
4.0 GM 11.0 GM 15R372 Watch1,2 12 Sep 2017
4.1 beta 11.1 beta 15R5823c Watch1,2 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch1,2 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch1,2 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch1,2 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch1,2 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch1,2 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch1,2 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch1,2 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch1,2 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch1,2 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch1,2 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch1,2 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch1,2 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch1,2 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch1,2 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch1,2 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch1,2 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch1,2 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch1,2 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch1,2 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch1,2 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch1,2 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch1,2 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch1,2 14 May 2018

Apple Watch Series 1

Watch2,6

Version Build Keys Release Date
watchOS iOS
4.0 beta 11.0 beta 15R5281f Watch2,6 5 Jun 2017
4.0 beta 2 11.0 beta 2 15R5307f Watch2,6 21 Jun 2017
4.0 beta 3 11.0 beta 3 15R5321h Watch2,6 13 Jul 2017
4.0 beta 4 11.0 beta 4 15R5331g Watch2,6 24 Jul 2017
4.0 beta 5 11.0 beta 5 15R5345g Watch2,6 7 Aug 2017
4.0 beta 6 11.0 beta 6 15R5357b Watch2,6 14 Aug 2017
4.0 beta 7 11.0 beta 7 15R5365a Watch2,6 21 Aug 2017
4.0 beta 8 11.0 beta 8 15R5371a Watch2,6 28 Aug 2017
4.0 GM 11.0 GM 15R372 Watch2,6 12 Sep 2017
4.1 beta 11.1 beta 15R5823c Watch2,6 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch2,6 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch2,6 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch2,6 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch2,6 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch2,6 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch2,6 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch2,6 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch2,6 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch2,6 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch2,6 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch2,6 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch2,6 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch2,6 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch2,6 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch2,6 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch2,6 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch2,6 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5535b Watch2,6 16 Mar 2018
4.3.1 beta 11.4 beta 15T5212a Watch2,6 2 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch2,6 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch2,6 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch2,6 14 May 2018

Watch2,7

Version Build Keys Release Date
watchOS iOS
4.0 beta 11.0 beta 15R5281f Watch2,7 5 Jun 2017
4.0 beta 2 11.0 beta 2 15R5307f Watch2,7 21 Jun 2017
4.0 beta 3 11.0 beta 3 15R5321h Watch2,7 13 Jul 2017
4.0 beta 4 11.0 beta 4 15R5331g Watch2,7 24 Jul 2017
4.0 beta 5 11.0 beta 5 15R5345g Watch2,7 7 Aug 2017
4.0 beta 6 11.0 beta 6 15R5357b Watch2,7 14 Aug 2017
4.0 beta 7 11.0 beta 7 15R5365a Watch2,7 21 Aug 2017
4.0 beta 8 11.0 beta 8 15R5371a Watch2,7 28 Aug 2017
4.0 GM 11.0 GM 15R372 Watch2,7 12 Sep 2017
4.1 beta 11.1 beta 15R5823c Watch2,7 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch2,7 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch2,7 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch2,7 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch2,7 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch2,7 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch2,7 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch2,7 17 Nov 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch2,7 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch2,7 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch2,7 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch2,7 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch2,7 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch2,7 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch2,7 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch2,7 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch2,7 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch2,7 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch2,7 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch2,7 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch2,7 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch2,7 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch2,7 14 May 2018

Apple Watch Series 2

Watch2,3

Version Build Keys Release Date
watchOS iOS
4.0 beta 11.0 beta 15R5281f Watch2,3 5 Jun 2017
4.0 beta 2 11.0 beta 2 15R5307f Watch2,3 21 Jun 2017
4.0 beta 3 11.0 beta 3 15R5321h Watch2,3 13 Jul 2017
4.0 beta 4 11.0 beta 4 15R5331g Watch2,3 24 Jul 2017
4.0 beta 5 11.0 beta 5 15R5345g Watch2,3 7 Aug 2017
4.0 beta 6 11.0 beta 6 15R5357b Watch2,3 14 Aug 2017
4.0 beta 7 11.0 beta 7 15R5365a Watch2,3 21 Aug 2017
4.0 beta 8 11.0 beta 8 15R5371a Watch2,3 28 Aug 2017
4.0 GM 11.0 GM 15R372 Watch2,3 12 Sep 2017
4.1 beta 11.1 beta 15R5823c Watch2,3 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch2,3 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch2,3 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch2,3 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch2,3 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch2,3 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch2,3 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch2,3 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch2,3 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch2,3 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch2,3 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch2,3 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch2,3 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch2,3 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch2,3 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch2,3 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch2,3 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch2,3 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch2,3 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch2,3 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch2,3 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch2,3 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch2,3 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch2,3 14 May 2018

Watch2,4

Version Build Keys Release Date
watchOS iOS
4.0 beta 11.0 beta 15R5281f Watch2,4 5 Jun 2017
4.0 beta 2 11.0 beta 2 15R5307f Watch2,4 21 Jun 2017
4.0 beta 3 11.0 beta 3 15R5321h Watch2,4 13 Jul 2017
4.0 beta 4 11.0 beta 4 15R5331g Watch2,4 24 Jul 2017
4.0 beta 5 11.0 beta 5 15R5345g Watch2,4 7 Aug 2017
4.0 beta 6 11.0 beta 6 15R5357b Watch2,4 14 Aug 2017
4.0 beta 7 11.0 beta 7 15R5365a Watch2,4 21 Aug 2017
4.0 beta 8 11.0 beta 8 15R5371a Watch2,4 28 Aug 2017
4.0 GM 11.0 GM 15R372 Watch2,4 12 Sep 2017
4.1 beta 11.1 beta 15R5823c Watch2,4 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch2,4 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch2,4 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch2,4 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch2,4 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch2,4 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch2,4 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch2,4 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch2,4 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch2,4 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch2,4 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch2,4 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch2,4 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch2,4 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch2,4 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch2,4 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch2,4 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch2,4 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch2,4 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch2,4 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch2,4 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch2,4 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch2,4 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch2,4 14 May 2018

Apple Watch Series 3

Watch3,1

Version Build Keys Baseband Release Date
watchOS iOS
4.1 beta 11.1 beta 15R5823c Watch3,1 1.22.00 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch3,1 1.22.02-1 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch3,1 1.22.02 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch3,1 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch3,1 1.34.00 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch3,1 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch3,1 1.34.01 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch3,1 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch3,1 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch3,1 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch3,1 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch3,1 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch3,1 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch3,1 1.55.03 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch3,1 1.56.00 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch3,1 1.56.01 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch3,1 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch3,1 1.56.02 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch3,1 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch3,1 1.56.01 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch3,1 1.56.02 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch3,1 1.60.00 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch3,1 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch3,1 14 May 2018

Watch3,2

Version Build Keys Baseband Release Date
watchOS iOS
4.1 beta 11.1 beta 15R5823c Watch3,2 1.22.00 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch3,2 1.22.02-1 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch3,2 1.22.02 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch3,2 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch3,2 1.34.00 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch3,2 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch3,2 1.34.01 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch3,2 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch3,2 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch3,2 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch3,2 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch3,2 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch3,2 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch3,2 1.55.03 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch3,2 1.56.00 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch3,2 1.56.01 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch3,2 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch3,2 1.56.02 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch3,2 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch3,2 1.56.01 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch3,2 1.56.02 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch3,2 1.60.00 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch3,2 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch3,2 14 May 2018

Watch3,3

Version Build Keys Release Date
watchOS iOS
4.1 beta 11.1 beta 15R5823c Watch3,3 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch3,3 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch3,3 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch3,3 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch3,3 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch3,3 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch3,3 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch3,3 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch3,3 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch3,3 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch3,3 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch3,3 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch3,3 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch3,3 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch3,3 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch3,3 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch3,3 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch3,3 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch3,3 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch3,3 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch3,3 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch3,3 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch3,3 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch3,3 14 May 2018

Watch3,4

Version Build Keys Release Date
watchOS iOS
4.1 beta 11.1 beta 15R5823c Watch3,4 27 Sep 2017
4.1 beta 2 11.1 beta 2 15R5835d Watch3,4 9 Oct 2017
4.1 beta 3 11.1 beta 3 15R5843a Watch3,4 16 Oct 2017
4.1 beta 4 11.1 beta 4 15R846 Watch3,4 20 Oct 2017
4.2 beta 11.2 beta 15S5085b Watch3,4 30 Oct 2017
4.2 beta 2 11.2 beta 2 15S5090c Watch3,4 6 Nov 2017
4.2 beta 3 11.2 beta 3 15S5100a Watch3,4 13 Nov 2017
4.2 beta 4 11.2 beta 4 15S5102b Watch3,4 17 Nov 2017
4.2.2 beta 11.2.5 beta 15S5530d Watch3,4 13 Dec 2017
4.2.2 beta 2 11.2.5 beta 2 15S5534a Watch3,4 19 Dec 2017
4.2.2 beta 3 11.2.5 beta 3 15S5536a Watch3,4 3 Jan 2018
4.2.2 beta 4 11.2.5 beta 4 15S5540a Watch3,4 9 Jan 2018
4.2.2 beta 5 11.2.5 beta 5 15S542 Watch3,4 19 Jan 2018
4.3 beta 11.3 beta 15T5165e Watch3,4 25 Jan 2018
4.3 beta 2 11.3 beta 2 15T5176c Watch3,4 7 Feb 2018
4.3 beta 3 11.3 beta 3 15T5187e Watch3,4 21 Feb 2018
4.3 beta 4 11.3 beta 4 15T5199f Watch3,4 6 Mar 2018
4.3 beta 5 11.3 beta 5 15T5209a Watch3,4 12 Mar 2018
4.3 beta 6 11.3 beta 6 15T5212a Watch3,4 16 Mar 2018
4.3.1 beta 11.4 beta 15T5535b Watch3,4 2 Apr 2018
4.3.1 beta 2 11.4 beta 2 15T5545b Watch3,4 16 Apr 2018
4.3.1 beta 3 11.4 beta 3 15T5555c Watch3,4 1 May 2018
4.3.1 beta 4 11.4 beta 4 15T5565a Watch3,4 7 May 2018
4.3.1 beta 5 11.4 beta 5 15T5567a Watch3,4 14 May 2018