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Difference between revisions of "Firmware/Apple Watch/5.x"

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(watchOS 5.3.7)
(watchOS 5.3.8)
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch2,6)|Watch2,6]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch2,7)|Watch2,7]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch2,3)|Watch2,3]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch2,4)|Watch2,4]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| 16U569
  
| 16U569
 
| [[GloryG 16U569 (Watch3,1)|Watch3,1]]
  
| [[GloryG 16U569 (Watch3,1)|Watch3,1]]
−
| rowspan="8" | 2.60.02
 +
| rowspan="9" | 2.60.02
 
| {{date|2019|07|22}}
  
| {{date|2019|07|22}}
 
| [https://support.apple.com/HT209085#53 Release Notes]<br />[https://support.apple.com/kb/HT210353 Security Notes]
  
| [https://support.apple.com/HT209085#53 Release Notes]<br />[https://support.apple.com/kb/HT210353 Security Notes]
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch3,1)|Watch3,1]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| 16U569
  
| 16U569
 
| [[GloryG 16U569 (Watch3,2)|Watch3,2]]
  
| [[GloryG 16U569 (Watch3,2)|Watch3,2]]
−
| rowspan="8" | 2.60.02
 +
| rowspan="9" | 2.60.02
 
| {{date|2019|07|22}}
  
| {{date|2019|07|22}}
 
| [https://support.apple.com/HT209085#53 Release Notes]<br />[https://support.apple.com/kb/HT210353 Security Notes]
  
| [https://support.apple.com/HT209085#53 Release Notes]<br />[https://support.apple.com/kb/HT210353 Security Notes]
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch3,2)|Watch3,2]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch3,3)|Watch3,3]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch3,4)|Watch3,4]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch4,1)|Watch4,1]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch4,2)|Watch4,2]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| 16T225
  
| 16T225
 
| [[GloryE 16T225 (Watch4,3)|Watch4,3]]
  
| [[GloryE 16T225 (Watch4,3)|Watch4,3]]
−
| rowspan="10" | 1.04.05
 +
| rowspan="11" | 1.04.05
 
| {{date|2019|03|27}}
  
| {{date|2019|03|27}}
 
| [https://support.apple.com/HT209085#52 Release Notes]<br />[https://support.apple.com/kb/HT209602 Security Notes]
  
| [https://support.apple.com/HT209085#52 Release Notes]<br />[https://support.apple.com/kb/HT209602 Security Notes]
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch4,3)|Watch4,3]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   
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| 16T225
  
| 16T225
 
| [[GloryE 16T225 (Watch4,4)|Watch4,4]]
  
| [[GloryE 16T225 (Watch4,4)|Watch4,4]]
−
| rowspan="10" | 1.04.05
 +
| rowspan="11" | 1.04.05
 
| {{date|2019|03|27}}
  
| {{date|2019|03|27}}
 
| [https://support.apple.com/HT209085#52 Release Notes]<br />[https://support.apple.com/kb/HT209602 Security Notes]
  
| [https://support.apple.com/HT209085#52 Release Notes]<br />[https://support.apple.com/kb/HT209602 Security Notes]
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| {{date|2020|05|18}}
  
| {{date|2020|05|18}}
 
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  
| [https://support.apple.com/HT209085#537 Release Notes]<br />[https://support.apple.com/HT211176 Security Notes]
  +
|-
  +
| 5.3.8
  +
| 12.4.8
  +
| 16U680
  +
| [[GlorySecGraceG 16U680 (Watch4,4)|Watch4,4]]
  +
| {{date|2020|07|15}}
  +
| [https://support.apple.com/HT209085#538 Release Notes]
 
|}
  
|}
   

Revision as of 12:24, 16 July 2020

Apple Watch Series 1

Watch2,6

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch2,6 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch2,6 27 September 2018 Release Notes
5.1 12.1 16R591 Watch2,6 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch2,6 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch2,6 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch2,6 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch2,6 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch2,6 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch2,6 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch2,6 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch2,6 26 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch2,6 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch2,6 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch2,6 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch2,6 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch2,6 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch2,6 15 July 2020 Release Notes

Watch2,7

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch2,7 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch2,7 27 September 2018 Release Notes
5.1 12.1 16R591 Watch2,7 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch2,7 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch2,7 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch2,7 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch2,7 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch2,7 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch2,7 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch2,7 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch2,7 26 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch2,7 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch2,7 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch2,7 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch2,7 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch2,7 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch2,7 15 July 2020 Release Notes

Apple Watch Series 2

Watch2,3

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch2,3 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch2,3 27 September 2018 Release Notes
5.1 12.1 16R591 Watch2,3 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch2,3 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch2,3 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch2,3 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch2,3 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch2,3 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch2,3 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch2,3 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch2,3 26 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch2,3 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch2,3 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch2,3 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch2,3 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch2,3 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch2,3 15 July 2020 Release Notes

Watch2,4

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch2,4 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch2,4 27 September 2018 Release Notes
5.1 12.1 16R591 Watch2,4 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch2,4 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch2,4 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch2,4 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch2,4 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch2,4 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch2,4 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch2,4 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch2,4 26 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch2,4 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch2,4 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch2,4 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch2,4 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch2,4 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch2,4 15 July 2020 Release Notes

Apple Watch Series 3

Watch3,1

Version Build Keys Baseband Release Date Release Notes
watchOS iOS
5.0 12.0 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 12.1 16R591 Watch3,1 2.21.00 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch3,1 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch3,1 2.31.00 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch3,1 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch3,1 2.55.00 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch3,1 2.55.01 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch3,1 2.60.02 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch3,1 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch3,1 30 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch3,1 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch3,1 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch3,1 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch3,1 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch3,1 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch3,1 15 July 2020 Release Notes

Watch3,2

Version Build Keys Baseband Release Date Release Notes
watchOS iOS
5.0 12.0 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 12.1 16R591 Watch3,2 2.21.00 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch3,2 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch3,2 2.31.00 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch3,2 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch3,2 2.55.00 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch3,2 2.55.01 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch3,2 2.60.02 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch3,2 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch3,2 30 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch3,2 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch3,2 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch3,2 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch3,2 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch3,2 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch3,2 15 July 2020 Release Notes

Watch3,3

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch3,3 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch3,3 27 September 2018 Release Notes
5.1 12.1 16R591 Watch3,3 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch3,3 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch3,3 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch3,3 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch3,3 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch3,3 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch3,3 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch3,3 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch3,3 30 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch3,3 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch3,3 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch3,3 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch3,3 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch3,3 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch3,3 15 July 2020 Release Notes

Watch3,4

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch3,4 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch3,4 27 September 2018 Release Notes
5.1 12.1 16R591 Watch3,4 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch3,4 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch3,4 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch3,4 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch3,4 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch3,4 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch3,4 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch3,4 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch3,4 30 September 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch3,4 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch3,4 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch3,4 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch3,4 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch3,4 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch3,4 15 July 2020 Release Notes

Apple Watch Series 4

Watch4,1

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch4,1 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch4,1 27 September 2018 Release Notes
5.1 12.1 16R591 Watch4,1 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch4,1 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch4,1 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch4,1 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch4,1 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch4,1 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch4,1 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch4,1 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch4,1 9 October 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch4,1 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch4,1 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch4,1 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch4,1 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch4,1 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch4,1 15 July 2020 Release Notes

Watch4,2

Version Build Keys Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch4,2 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch4,2 27 September 2018 Release Notes
5.1 12.1 16R591 Watch4,2 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch4,2 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch4,2 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch4,2 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch4,2 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch4,2 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch4,2 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch4,2 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch4,2 9 October 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch4,2 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch4,2 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch4,2 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch4,2 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch4,2 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch4,2 15 July 2020 Release Notes

Watch4,3

Version Build Keys Baseband Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch4,3 1.00.03 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch4,3 27 September 2018 Release Notes
5.1 12.1 16R591 Watch4,3 1.01.04 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch4,3 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch4,3 1.02.02 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch4,3 1.03.01 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch4,3 1.04.05 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch4,3 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch4,3 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch4,3 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch4,3 9 October 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch4,3 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch4,3 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch4,3 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch4,3 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch4,3 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch4,3 15 July 2020 Release Notes

Watch4,4

Version Build Keys Baseband Release Date Release Notes
watchOS iOS
5.0 12.0 16R364 Watch4,4 1.00.03 17 September 2018 Release Notes
Security Notes
5.0.1 16R381 Watch4,4 27 September 2018 Release Notes
5.1 12.1 16R591 Watch4,4 1.01.04 30 October 2018 Release Notes
Security Notes
5.1.1 12.1 16R600 Watch4,4 5 November 2018 Release Notes
5.1.2 12.1.1 16S46 Watch4,4 1.02.02 6 December 2018 Release Notes
Security Notes
5.1.3 12.1.3 16S535 Watch4,4 1.03.01 22 January 2019 Release Notes
Security Notes
5.2 12.2 16T225 Watch4,4 1.04.05 27 March 2019 Release Notes
Security Notes
5.2.1 12.3 16U113 Watch4,4 19 May 2019 Release Notes
Security Notes
5.3 12.4 16U569 Watch4,4 22 July 2019 Release Notes
Security Notes
5.3.1 12.4.1 16U600 Watch4,4 26 August 2019 Release Notes
5.3.2 12.4.2 16U611 Watch4,4 9 October 2019 Release Notes
Security Notes
5.3.3 12.4.3 16U620 Watch4,4 29 October 2019 Release Notes
5.3.4 12.4.4 16U627 Watch4,4 10 December 2019 Release Notes
Security Notes
5.3.5 12.4.5 16U652 Watch4,4 18 February 2020 Release Notes
5.3.6 12.4.6 16U662 Watch4,4 24 March 2020 Release Notes
5.3.7 12.4.7 16U674 Watch4,4 18 May 2020 Release Notes
Security Notes
5.3.8 12.4.8 16U680 Watch4,4 15 July 2020 Release Notes
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