Apple Watch Series 4 (40mm, LTE)
On this page, you will get all IPSW firmware files for Apple Watch Series 4 (40mm, LTE) (Watch4,3), including the latest watchOS updates as well as previously released versions. This is full list of Apple Watch Series 4 (40mm, LTE) IPSW file signed and unsigned both versions from ipswguide is Free.
All IPSW firmware files listed here are official and released directly by Apple. You can use the signed versions to restore, update, remove a passcode, or repair your device using Finder or iTunes. Make sure, always prefer to download and install signed firmware versions. The unsigned versions cannot be installed through official methods.
Not sure which model? If you're using iOS 12 or later, go to Settings > General > About > Model Name. Or, use our Device Identifier Tool to find your exact model
0 Signed
0 Unsigned
75 OTA
75 total
| Version | Build ID | Released | Size | Status | Download |
|---|---|---|---|---|---|
| 📡 OTA (Over-the-Air) Updates | |||||
| 5.3.10 OTA | 16U711 | Mar 24, 2026 | 143 MB | OTA Signed | OTA |
| 6.3.1 OTA | 17U224 | Feb 2, 2026 | 334 MB | OTA Signed | OTA |
| 5.3.9 OTA | 16U693 | Nov 5, 2020 | 59 MB | OTA Signed | OTA |
| 6.3 OTA | 17U216 | Jan 26, 2021 | 469 MB | OTA | OTA |
| 5.3.8 OTA | 16U680 | Jul 15, 2020 | 62 MB | OTA | OTA |
| 5.3.7 OTA | 16U674 | May 18, 2020 | 1.47 GB | OTA | OTA |
| 5.3.6 OTA | 16U662 | Mar 24, 2020 | 66 MB | OTA | OTA |
| 5.3.5 OTA | 16U652 | Feb 18, 2020 | 1.47 GB | OTA | OTA |
| 5.3.4 OTA | 16U627 | Dec 10, 2019 | 1.47 GB | OTA | OTA |
| 6.1.1 OTA | 17S5433b | Nov 5, 2019 | 322 MB | OTA | OTA |
| 5.3.3 OTA | 16U620 | Oct 29, 2019 | 1.47 GB | OTA | OTA |
| 6.1 OTA | 17S5083a | Oct 23, 2019 | 62 MB | OTA | OTA |
| 6.1 OTA | 17S5076a | Oct 16, 2019 | 294 MB | OTA | OTA |
| 6.1 OTA | 17S5068e | Oct 10, 2019 | 384 MB | OTA | OTA |
| 5.3.2 OTA | 16U611 | Oct 9, 2019 | 1.47 GB | OTA | OTA |
| 6.1 OTA | 17S5059e | Oct 2, 2019 | 739 MB | OTA | OTA |
| 6.0.1 OTA | 17R6605 | Sep 30, 2019 | 151 MB | OTA | OTA |
| 6.0.1 OTA | 17R605 | Sep 30, 2019 | 1.51 GB | OTA | OTA |
| 6.1 OTA | 17S5054e | Sep 23, 2019 | 276 MB | OTA | OTA |
| 6.0 OTA | 17R6575 | Sep 11, 2019 | 588 MB | OTA | OTA |
| 6.0 OTA | 17R575 | Sep 11, 2019 | 743 MB | OTA | OTA |
| 6.0 OTA | 17R5575a | Aug 27, 2019 | 739 MB | OTA | OTA |
| 5.3.1 OTA | 16U6600 | Aug 26, 2019 | 124 MB | OTA | OTA |
| 5.3.1 OTA | 16U600 | Aug 26, 2019 | 1.47 GB | OTA | OTA |
| 6.0 OTA | 17R5571a | Aug 21, 2019 | 739 MB | OTA | OTA |
| 6.0 OTA | 17R5566a | Aug 15, 2019 | 134 MB | OTA | OTA |
| 6.0 OTA | 17R5556d | Aug 7, 2019 | 741 MB | OTA | OTA |
| 6.0 OTA | 17R5546f | Jul 30, 2019 | 415 MB | OTA | OTA |
| 5.3 OTA | 16U6569 | Jul 22, 2019 | 127 MB | OTA | OTA |
| 5.3 OTA | 16U569 | Jul 22, 2019 | 498 MB | OTA | OTA |
| 6.0 OTA | 17R5532f | Jul 17, 2019 | 302 MB | OTA | OTA |
| 5.3 OTA | 16U5569a | Jul 16, 2019 | 119 MB | OTA | OTA |
| 5.3 OTA | 16U5566a | Jul 9, 2019 | 87 MB | OTA | OTA |
| 6.0 OTA | 17R5521e | Jul 2, 2019 | 495 MB | OTA | OTA |
| 5.3 OTA | 16U5558b | Jun 24, 2019 | 1.47 GB | OTA | OTA |
| 6.0 OTA | 17R5507l | Jun 17, 2019 | 734 MB | OTA | OTA |
| 5.3 OTA | 16U5545c | Jun 11, 2019 | 121 MB | OTA | OTA |
| 6.0 OTA | 17R5491t | Jun 3, 2019 | 725 MB | OTA | OTA |
| 5.3 OTA | 16U5537b | May 28, 2019 | 138 MB | OTA | OTA |
| 5.3 OTA | 16U5526f | May 15, 2019 | 196 MB | OTA | OTA |
| 5.2.1 OTA | 16U113 | May 13, 2019 | 1.47 GB | OTA | OTA |
| 5.2.1 OTA | 16U6113 | May 13, 2019 | 157 MB | OTA | OTA |
| 5.2.1 OTA | 16U5113a | May 7, 2019 | 1.47 GB | OTA | OTA |
| 5.2.1 OTA | 16U5110a | Apr 29, 2019 | 1.47 GB | OTA | OTA |
| 5.2.1 OTA | 16U5101c | Apr 22, 2019 | 138 MB | OTA | OTA |
| 5.2.1 OTA | 16U5091b | Apr 8, 2019 | 114 MB | OTA | OTA |
| 5.2.1 OTA | 16U5079d | Mar 28, 2019 | 1.47 GB | OTA | OTA |
| 5.2 OTA | 16T6225 | Mar 27, 2019 | 1.47 GB | OTA | OTA |
| 5.2 OTA | 16T225 | Mar 27, 2019 | 1.47 GB | OTA | OTA |
| 5.2 OTA | 16T5225a | Mar 18, 2019 | 1.46 GB | OTA | OTA |
| 5.2 OTA | 16T5222a | Mar 11, 2019 | 1.46 GB | OTA | OTA |
| 5.2 OTA | 16T5212e | Mar 4, 2019 | 1.46 GB | OTA | OTA |
| 5.2 OTA | 16T5201c | Feb 19, 2019 | 1.47 GB | OTA | OTA |
| 5.2 OTA | 16T5191d | Feb 4, 2019 | 1.46 GB | OTA | OTA |
| 5.2 OTA | 16T5181f | Jan 24, 2019 | 1.46 GB | OTA | OTA |
| 5.1.3 OTA | 16S6535 | Jan 22, 2019 | 104 MB | OTA | OTA |
| 5.1.3 OTA | 16S535 | Jan 22, 2019 | 1.45 GB | OTA | OTA |
| 5.1.3 OTA | 16S5535a | Jan 7, 2019 | 1.45 GB | OTA | OTA |
| 5.1.3 OTA | 16S5531a | Dec 19, 2018 | 95 MB | OTA | OTA |
| 5.1.3 OTA | 16S5523a | Dec 10, 2018 | 172 MB | OTA | OTA |
| 5.1.2 OTA | 16S46 | Dec 6, 2018 | 167 MB | OTA | OTA |
| 5.1.2 OTA | 16S6046 | Dec 6, 2018 | 86 MB | OTA | OTA |
| 5.1.2 OTA | 16S5046a | Nov 15, 2018 | 1.45 GB | OTA | OTA |
| 5.1.2 OTA | 16S5042a | Nov 7, 2018 | 1.45 GB | OTA | OTA |
| 5.1.1 OTA | 16R6600 | Nov 5, 2018 | 173 MB | OTA | OTA |
| 5.1.1 OTA | 16R600 | Nov 5, 2018 | 1.45 GB | OTA | OTA |
| 5.1 OTA | 16R6591 | Oct 30, 2018 | 86 MB | OTA | OTA |
| 5.1 OTA | 16R591 | Oct 30, 2018 | 1.45 GB | OTA | OTA |
| 5.1 OTA | 16R5589c | Oct 22, 2018 | 186 MB | OTA | OTA |
| 5.1 OTA | 16R5584a | Oct 15, 2018 | 62 MB | OTA | OTA |
| 5.1 OTA | 16R5577c | Oct 9, 2018 | 126 MB | OTA | OTA |
| 5.1 OTA | 16R5568d | Oct 2, 2018 | 142 MB | OTA | OTA |
| 5.0.1 OTA | 16R382 | Sep 27, 2018 | 56 MB | OTA | OTA |
| 5.1 OTA | 16R5559d | Sep 18, 2018 | 1.45 GB | OTA | OTA |
| 5.0 OTA | 16R364 | Sep 12, 2018 | 1.46 GB | OTA | OTA |
📖 How to Restore
Mac (Finder, macOS Catalina+):
- Connect your device.
- Open Finder.
- Select your device in the sidebar.
- Hold
Option ⌥and click Restore iPhone… - Select your downloaded IPSW file.
Windows (iTunes):
- Open iTunes and connect your device.
- Hold
Shiftand click Restore iPhone… - Select the IPSW file.
⚠️ Restoring will erase all data on the device. Always back up first.