< Firmware | Apple Watch
Apple Watch Series 1
Watch2,6
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch2,6 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch2,6 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch2,6 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch2,6 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch2,6 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch2,6 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch2,6 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch2,6 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch2,6 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch2,6 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch2,6 | 26 September 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch2,6 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch2,6 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch2,6 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch2,6 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch2,6 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch2,6 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch2,6 | 5 November 2020 | Release Notes Security Notes |
Watch2,7
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch2,7 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch2,7 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch2,7 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch2,7 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch2,7 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch2,7 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch2,7 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch2,7 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch2,7 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch2,7 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch2,7 | 26 September 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch2,7 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch2,7 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch2,7 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch2,7 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch2,7 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch2,7 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch2,7 | 5 November 2020 | Release Notes Security Notes |
Apple Watch Series 2
Watch2,3
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch2,3 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch2,3 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch2,3 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch2,3 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch2,3 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch2,3 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch2,3 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch2,3 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch2,3 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch2,3 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch2,3 | 26 September 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch2,3 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch2,3 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch2,3 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch2,3 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch2,3 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch2,3 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch2,3 | 5 November 2020 | Release Notes Security Notes |
Watch2,4
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch2,4 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch2,4 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch2,4 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch2,4 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch2,4 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch2,4 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch2,4 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch2,4 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch2,4 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch2,4 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch2,4 | 26 September 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch2,4 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch2,4 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch2,4 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch2,4 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch2,4 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch2,4 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch2,4 | 5 November 2020 | Release Notes Security Notes |
Apple Watch Series 3
Watch3,1
| Version | Build | Keys | Baseband | Release Date | Release Notes |
|---|---|---|---|---|---|
| 5.0 | 16R364 | Watch3,1 | 2.10.00 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch3,1 | 27 September 2018 | Release Notes | |
| 5.1 | 16R591 | Watch3,1 | 2.21.00 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch3,1 | 5 November 2018 | Release Notes | |
| 5.1.2 | 16S46 | Watch3,1 | 2.31.00 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch3,1 | 22 January 2019 | Release Notes Security Notes | |
| 5.2 | 16T225 | Watch3,1 | 2.55.00 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch3,1 | 2.55.01 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch3,1 | 2.60.02 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch3,1 | 26 August 2019 | Release Notes | |
| 5.3.2 | 16U611 | Watch3,1 | 30 September 2019 | Release Notes Security Notes | |
| 5.3.3 | 16U620 | Watch3,1 | 29 October 2019 | Release Notes | |
| 5.3.4 | 16U627 | Watch3,1 | 10 December 2019 | Release Notes Security Notes | |
| 5.3.5 | 16U652 | Watch3,1 | 18 February 2020 | Release Notes | |
| 5.3.6 | 16U662 | Watch3,1 | 24 March 2020 | Release Notes | |
| 5.3.7 | 16U674 | Watch3,1 | 18 May 2020 | Release Notes Security Notes | |
| 5.3.8 | 16U680 | Watch3,1 | 15 July 2020 | Release Notes | |
| 5.3.9 | 16U693 | Watch3,1 | 5 November 2020 | Release Notes Security Notes |
Watch3,2
| Version | Build | Keys | Baseband | Release Date | Release Notes |
|---|---|---|---|---|---|
| 5.0 | 16R364 | Watch3,2 | 2.10.00 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch3,2 | 27 September 2018 | Release Notes | |
| 5.1 | 16R591 | Watch3,2 | 2.21.00 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch3,2 | 5 November 2018 | Release Notes | |
| 5.1.2 | 16S46 | Watch3,2 | 2.31.00 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch3,2 | 22 January 2019 | Release Notes Security Notes | |
| 5.2 | 16T225 | Watch3,2 | 2.55.00 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch3,2 | 2.55.01 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch3,2 | 2.60.02 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch3,2 | 26 August 2019 | Release Notes | |
| 5.3.2 | 16U611 | Watch3,2 | 30 September 2019 | Release Notes Security Notes | |
| 5.3.3 | 16U620 | Watch3,2 | 29 October 2019 | Release Notes | |
| 5.3.4 | 16U627 | Watch3,2 | 10 December 2019 | Release Notes Security Notes | |
| 5.3.5 | 16U652 | Watch3,2 | 18 February 2020 | Release Notes | |
| 5.3.6 | 16U662 | Watch3,2 | 24 March 2020 | Release Notes | |
| 5.3.7 | 16U674 | Watch3,2 | 18 May 2020 | Release Notes Security Notes | |
| 5.3.8 | 16U680 | Watch3,2 | 15 July 2020 | Release Notes | |
| 5.3.9 | 16U693 | Watch3,2 | 5 November 2020 | Release Notes Security Notes |
Watch3,3
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch3,3 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch3,3 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch3,3 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch3,3 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch3,3 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch3,3 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch3,3 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch3,3 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch3,3 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch3,3 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch3,3 | 30 September 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch3,3 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch3,3 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch3,3 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch3,3 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch3,3 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch3,3 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch3,3 | 5 November 2020 | Release Notes Security Notes |
Watch3,4
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch3,4 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R381 | Watch3,4 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch3,4 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch3,4 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch3,4 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch3,4 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch3,4 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch3,4 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch3,4 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch3,4 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch3,4 | 30 September 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch3,4 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch3,4 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch3,4 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch3,4 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch3,4 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch3,4 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch3,4 | 5 November 2020 | Release Notes Security Notes |
Apple Watch Series 4
Watch4,1
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch4,1 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R382 | Watch4,1 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch4,1 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch4,1 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch4,1 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch4,1 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch4,1 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch4,1 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch4,1 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch4,1 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch4,1 | 9 October 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch4,1 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch4,1 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch4,1 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch4,1 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch4,1 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch4,1 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch4,1 | 5 November 2020 | Release Notes Security Notes |
Watch4,2
| Version | Build | Keys | Release Date | Release Notes |
|---|---|---|---|---|
| 5.0 | 16R364 | Watch4,2 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R382 | Watch4,2 | 27 September 2018 | Release Notes |
| 5.1 | 16R591 | Watch4,2 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch4,2 | 5 November 2018 | Release Notes |
| 5.1.2 | 16S46 | Watch4,2 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch4,2 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch4,2 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch4,2 | 19 May 2019 | Release Notes Security Notes |
| 5.3 | 16U569 | Watch4,2 | 22 July 2019 | Release Notes Security Notes |
| 5.3.1 | 16U600 | Watch4,2 | 26 August 2019 | Release Notes |
| 5.3.2 | 16U611 | Watch4,2 | 9 October 2019 | Release Notes Security Notes |
| 5.3.3 | 16U620 | Watch4,2 | 29 October 2019 | Release Notes |
| 5.3.4 | 16U627 | Watch4,2 | 10 December 2019 | Release Notes Security Notes |
| 5.3.5 | 16U652 | Watch4,2 | 18 February 2020 | Release Notes |
| 5.3.6 | 16U662 | Watch4,2 | 24 March 2020 | Release Notes |
| 5.3.7 | 16U674 | Watch4,2 | 18 May 2020 | Release Notes Security Notes |
| 5.3.8 | 16U680 | Watch4,2 | 15 July 2020 | Release Notes |
| 5.3.9 | 16U693 | Watch4,2 | 5 November 2020 | Release Notes Security Notes |
Watch4,3
| Version | Build | Keys | Baseband | Release Date | Release Notes |
|---|---|---|---|---|---|
| 5.0 | 16R364 | Watch4,3 | 1.00.03 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R382 | Watch4,3 | 27 September 2018 | Release Notes | |
| 5.1 | 16R591 | Watch4,3 | 1.01.04 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch4,3 | 5 November 2018 | Release Notes | |
| 5.1.2 | 16S46 | Watch4,3 | 1.02.02 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch4,3 | 1.03.01 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch4,3 | 1.04.05 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch4,3 | 19 May 2019 | Release Notes Security Notes | |
| 5.3 | 16U569 | Watch4,3 | 22 July 2019 | Release Notes Security Notes | |
| 5.3.1 | 16U600 | Watch4,3 | 26 August 2019 | Release Notes | |
| 5.3.2 | 16U611 | Watch4,3 | 9 October 2019 | Release Notes Security Notes | |
| 5.3.3 | 16U620 | Watch4,3 | 29 October 2019 | Release Notes | |
| 5.3.4 | 16U627 | Watch4,3 | 10 December 2019 | Release Notes Security Notes | |
| 5.3.5 | 16U652 | Watch4,3 | 18 February 2020 | Release Notes | |
| 5.3.6 | 16U662 | Watch4,3 | 24 March 2020 | Release Notes | |
| 5.3.7 | 16U674 | Watch4,3 | 18 May 2020 | Release Notes Security Notes | |
| 5.3.8 | 16U680 | Watch4,3 | 15 July 2020 | Release Notes | |
| 5.3.9 | 16U693 | Watch4,3 | 5 November 2020 | Release Notes Security Notes |
Watch4,4
| Version | Build | Keys | Baseband | Release Date | Release Notes |
|---|---|---|---|---|---|
| 5.0 | 16R364 | Watch4,4 | 1.00.03 | 17 September 2018 | Release Notes Security Notes |
| 5.0.1 | 16R382 | Watch4,4 | 27 September 2018 | Release Notes | |
| 5.1 | 16R591 | Watch4,4 | 1.01.04 | 30 October 2018 | Release Notes Security Notes |
| 5.1.1 | 16R600 | Watch4,4 | 5 November 2018 | Release Notes | |
| 5.1.2 | 16S46 | Watch4,4 | 1.02.02 | 6 December 2018 | Release Notes Security Notes |
| 5.1.3 | 16S535 | Watch4,4 | 1.03.01 | 22 January 2019 | Release Notes Security Notes |
| 5.2 | 16T225 | Watch4,4 | 1.04.05 | 27 March 2019 | Release Notes Security Notes |
| 5.2.1 | 16U113 | Watch4,4 | 19 May 2019 | Release Notes Security Notes | |
| 5.3 | 16U569 | Watch4,4 | 22 July 2019 | Release Notes Security Notes | |
| 5.3.1 | 16U600 | Watch4,4 | 26 August 2019 | Release Notes | |
| 5.3.2 | 16U611 | Watch4,4 | 9 October 2019 | Release Notes Security Notes | |
| 5.3.3 | 16U620 | Watch4,4 | 29 October 2019 | Release Notes | |
| 5.3.4 | 16U627 | Watch4,4 | 10 December 2019 | Release Notes Security Notes | |
| 5.3.5 | 16U652 | Watch4,4 | 18 February 2020 | Release Notes | |
| 5.3.6 | 16U662 | Watch4,4 | 24 March 2020 | Release Notes | |
| 5.3.7 | 16U674 | Watch4,4 | 18 May 2020 | Release Notes Security Notes | |
| 5.3.8 | 16U680 | Watch4,4 | 15 July 2020 | Release Notes | |
| 5.3.9 | 16U693 | Watch4,4 | 5 November 2020 | Release Notes Security Notes |