OTA firmwares cannot be restored to. IPSW Downloads collects them for potential future use. They might also be useful if you're doing research.
| ✓ | Apple Watch Series 2 (38mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 49158a50fb02547f64b14b12d7f5f02ef0ce8e70.zip |
| ✓ | Apple Watch Series 2 (42mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | af06a69b3d32fcfb8c89643ff763e0fedaef2607.zip |
| ✓ | Apple Watch Series 1 (38mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 70388a0069364a4f93a8f99c76fa39d1661b24ca.zip |
| ✓ | Apple Watch Series 1 (42mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 4c78b05859500696004f745f921ea588689967e5.zip |
| ✓ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | ae4eb0e921640fbb69996ac2120ca02fcd9c25c2.zip |
| ✓ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 3da0279bf064683785ffefc62e7b7900f7c55bc6.zip |
| ✓ | Apple Watch Series 3 (38mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | d197ea5425bb6924761e7a2b33e27d5ba9ff27bf.zip |
| ✓ | Apple Watch Series 3 (42mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | ee756159009af122ad4418d70140d4eaf8a96c3e.zip |
| ✓ | Apple Watch Series 4 (44mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 699b56b078c1203c668ad4b2cec58872dd82884c.zip |
| ✓ | Apple Watch Series 4 (40mm) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 03e2aea5b164ae7cd0649a228f166f85e1617094.zip |
| ✓ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.4 GiB | 1eeb65e52cf308ee5e0c917bfd840ff8a6c6a23d.zip |
| ✓ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.3.9 (16U693) | November 5, 2020 | 1.3 GiB | 63e2d6ed21b1d3accb3d385d5af9cbf91cfa3547.zip |