Apple Watch (1st generation)[edit]
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[edit]
| Version | Build | Prerequisite Version | Prerequisite Build | Release Date | OTA Download URL | File Size |
|---|---|---|---|---|---|---|
| 2.0 beta 2 | 13S5255c | 8.2 | 12S507 | 23 June 2015 | 82026a1098f77cfc1e2b62bce37c347e766b96dc.zip | 381,800,662 |
| 8.2.1 | 12S632 | b77683041f84e3c24cb7e1c588611ab110f4265b.zip | 373,124,804 | |||
| 2.0 beta | 13S5254w | 3f85c4b8cdd9a7050c4442552d04dc503f7917f9.zip | 25,850,373 |
Watch1,2[edit]
| Version | Build | Prerequisite Version | Prerequisite Build | Release Date | OTA Download URL | File Size |
|---|---|---|---|---|---|---|
| 2.0 beta 2 | 13S5255c | 8.2 | 12S507 | 23 June 2015 | 8d1ac7ae0105fb14643e6fb48bd76ecae6ce8e69.zip | 373,453,732 |
| 8.2.1 | 12S632 | 6ab4e082725ed0b819302f6baee84d5044c069fc.zip | 380,929,911 | |||
| 2.0 beta | 13S5254w | 2d39f99863b85e05cf32b7048af094d6dcf96053.zip | 25,874,518 |