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 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | a3c5e56daf6ffa039e42b8b8f2c8b4d53a4d1ff3.zip |
| ✓ | Apple Watch Series 2 (42mm) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 30f9d0047a0fbf21af86a78fa4040bd49615d2e2.zip |
| ✓ | Apple Watch Series 1 (38mm) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 1d1b871be086e26412040296045e4dab1fab16bf.zip |
| ✓ | Apple Watch Series 1 (42mm) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | d962513b1b543b46bb1a22e0cc30eb8a1ad5b6c2.zip |
| ✓ | Apple Watch Series 3 (38mm, LTE) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 6612ae77f3c6a9b27e52d8e61280106625e088ef.zip |
| ✓ | Apple Watch Series 3 (42mm, LTE) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | d572ae49e3fb3f7757146870abd2abada0190c56.zip |
| ✓ | Apple Watch Series 3 (38mm) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 4a19e38054e0d85fa1a49cf5fd9d368dcf6a1d17.zip |
| ✓ | Apple Watch Series 3 (42mm) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 2f702ed173b1f78e9c46f768a702d7199bce1346.zip |
| ✓ | Apple Watch Series 4 (44mm) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | e6e527a49b7dfd6bd40c67a2642723e8928c200d.zip |
| ✓ | Apple Watch Series 4 (40mm) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 260a231cd3886467771bd68acfae33a20fce2567.zip |
| ✓ | Apple Watch Series 4 (40mm, LTE) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.4 GiB | 893009c0b14fa7d0f8957a66069d9b6de54867d4.zip |
| ✓ | Apple Watch Series 4 (44mm, LTE) | watchOS 5.3.10 (16U711) | March 24, 2026 | 1.3 GiB | 22232142cd5865ff580aa468ed9f0be167c1b07a.zip |