OTA Updates/Apple Watch/2.0.1

From The Apple Wiki

Apple Watch (1st generation)

watchOS "1.0" and "1.0.1" are marketing versions; their true OS versions were 8.2 and 8.2.1, respectively. Since the OS version and marketing version now match as of watchOS 2.0, a fake OS version of 9.0 is specified for devices on watchOS 1.0 or 1.0.1 (watchOS 9.0 became reality in 2022).

Watch1,1

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
2.0.1 13S428 8.2 12S507 21 October 2015 (2015-10-21) de20118693b210c181d11c638cdf82ce971af6ae.zip 553,226,952
8.2.1 12S632 eb54f89214c18fffd34d9f1ae7c2ac01f1854629.zip 546,280,874
2.0 13S344 c1f5c5e72a28faa4b13571ac2ea229f138a258bf.zip 65,814,053

Watch1,2

Version Build Prerequisite Version Prerequisite Build Release Date OTA Download URL File Size
2.0.1 13S428 8.2 12S507 21 October 2015 (2015-10-21) a2067437a861e18c69d45866082583f325172314.zip 551,217,103
8.2.1 12S632 45a8531bdb3aca2014da18b92d1aa0698719c481.zip 544,248,309
2.0 13S344 b5f52fa045e39eefee4b3dfc106b3d1158e674eb.zip 65,867,752