Firmware/Apple Watch/2.x

Apple Watch (1st generation)[edit source]

Version	Build	Keys	Release Date	Release Notes
2.0	13S344	Watch1,1	21 September 2015	Release Notes Security Notes
2.0.1	13S428	Watch1,1	21 October 2015	Release Notes Security Notes
2.1	13S661^{[1,1 1]}	Watch1,1	8 December 2015	Release Notes Security Notes
2.2	13V144	Watch1,1	21 March 2016	Release Notes Security Notes
2.2.1	13V420	Watch1,1	16 May 2016	Release Notes Security Notes
2.2.2	13V604	Watch1,1	18 July 2016	Release Notes Security Notes

^ An IPSW for Watch1,1 on 2.1 was found on Apple's servers here. It has a SHA1 hash of e02ab4ace8051ee12996e5547c397be30666d594 and a file size of 924,502,956.

Version	Build	Keys	Release Date	Release Notes
2.0	13S344	Watch1,2	21 September 2015	Release Notes Security Notes
2.0.1	13S428	Watch1,2	21 October 2015	Release Notes Security Notes
2.1	13S661^{[1,2 1]}	Watch1,2	8 December 2015	Release Notes Security Notes
2.2	13V144	Watch1,2	21 March 2016	Release Notes Security Notes
2.2.1	13V420	Watch1,2	16 May 2016	Release Notes Security Notes
2.2.2	13V604	Watch1,2	18 July 2016	Release Notes Security Notes

^ An IPSW for Watch1,2 on 2.1 was found on Apple's servers here. It has a SHA1 hash of 44b29ebb1552c930c9fc8921a86e29f9bb9fe00f and a file size of 926,842,087.