Apple Watch Series 4 (40mm)
On this page, you will get all IPSW firmware files for Apple Watch Series 4 (40mm) (Watch4,1), including the latest watchOS updates as well as previously released versions. This is full list of Apple Watch Series 4 (40mm) 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 | 127 MB | OTA Signed | OTA |
| 6.3.1 OTA | 17U224 | Feb 2, 2026 | 547 MB | OTA Signed | OTA |
| 5.3.9 OTA | 16U693 | Nov 5, 2020 | 60 MB | OTA Signed | OTA |
| 6.3 OTA | 17U216 | Jan 26, 2021 | 182 MB | OTA | OTA |
| 5.3.8 OTA | 16U680 | Jul 15, 2020 | 62 MB | OTA | OTA |
| 5.3.7 OTA | 16U674 | May 18, 2020 | 1.44 GB | OTA | OTA |
| 5.3.6 OTA | 16U662 | Mar 24, 2020 | 50 MB | OTA | OTA |
| 5.3.5 OTA | 16U652 | Feb 18, 2020 | 1.44 GB | OTA | OTA |
| 5.3.4 OTA | 16U627 | Dec 10, 2019 | 1.44 GB | OTA | OTA |
| 6.1.1 OTA | 17S5433b | Nov 5, 2019 | 395 MB | OTA | OTA |
| 5.3.3 OTA | 16U620 | Oct 29, 2019 | 1.44 GB | OTA | OTA |
| 6.1 OTA | 17S5083a | Oct 23, 2019 | 356 MB | OTA | OTA |
| 6.1 OTA | 17S5076a | Oct 16, 2019 | 103 MB | OTA | OTA |
| 6.1 OTA | 17S5068e | Oct 10, 2019 | 483 MB | OTA | OTA |
| 5.3.2 OTA | 16U611 | Oct 9, 2019 | 1.44 GB | OTA | OTA |
| 6.1 OTA | 17S5059e | Oct 2, 2019 | 256 MB | OTA | OTA |
| 6.0.1 OTA | 17R6605 | Sep 30, 2019 | 193 MB | OTA | OTA |
| 6.0.1 OTA | 17R605 | Sep 30, 2019 | 1.47 GB | OTA | OTA |
| 6.1 OTA | 17S5054e | Sep 23, 2019 | 267 MB | OTA | OTA |
| 6.0 OTA | 17R6575 | Sep 11, 2019 | 1.47 GB | OTA | OTA |
| 6.0 OTA | 17R575 | Sep 11, 2019 | 1.47 GB | OTA | OTA |
| 6.0 OTA | 17R5575a | Aug 27, 2019 | 284 MB | OTA | OTA |
| 5.3.1 OTA | 16U6600 | Aug 26, 2019 | 100 MB | OTA | OTA |
| 5.3.1 OTA | 16U600 | Aug 26, 2019 | 1.44 GB | OTA | OTA |
| 6.0 OTA | 17R5571a | Aug 21, 2019 | 717 MB | OTA | OTA |
| 6.0 OTA | 17R5566a | Aug 15, 2019 | 1.47 GB | OTA | OTA |
| 6.0 OTA | 17R5556d | Aug 7, 2019 | 716 MB | OTA | OTA |
| 6.0 OTA | 17R5546f | Jul 30, 2019 | 360 MB | OTA | OTA |
| 5.3 OTA | 16U6569 | Jul 22, 2019 | 101 MB | OTA | OTA |
| 5.3 OTA | 16U569 | Jul 22, 2019 | 110 MB | OTA | OTA |
| 6.0 OTA | 17R5532f | Jul 17, 2019 | 720 MB | OTA | OTA |
| 5.3 OTA | 16U5569a | Jul 16, 2019 | 115 MB | OTA | OTA |
| 5.3 OTA | 16U5566a | Jul 9, 2019 | 111 MB | OTA | OTA |
| 6.0 OTA | 17R5521e | Jul 2, 2019 | 693 MB | OTA | OTA |
| 5.3 OTA | 16U5558b | Jun 24, 2019 | 1.44 GB | OTA | OTA |
| 6.0 OTA | 17R5507l | Jun 17, 2019 | 684 MB | OTA | OTA |
| 5.3 OTA | 16U5545c | Jun 11, 2019 | 109 MB | OTA | OTA |
| 6.0 OTA | 17R5491t | Jun 3, 2019 | 818 MB | OTA | OTA |
| 5.3 OTA | 16U5537b | May 28, 2019 | 80 MB | OTA | OTA |
| 5.3 OTA | 16U5526f | May 15, 2019 | 78 MB | OTA | OTA |
| 5.2.1 OTA | 16U113 | May 13, 2019 | 1.43 GB | OTA | OTA |
| 5.2.1 OTA | 16U6113 | May 13, 2019 | 140 MB | OTA | OTA |
| 5.2.1 OTA | 16U5113a | May 7, 2019 | 135 MB | OTA | OTA |
| 5.2.1 OTA | 16U5110a | Apr 29, 2019 | 1.43 GB | OTA | OTA |
| 5.2.1 OTA | 16U5101c | Apr 22, 2019 | 203 MB | OTA | OTA |
| 5.2.1 OTA | 16U5091b | Apr 8, 2019 | 124 MB | OTA | OTA |
| 5.2.1 OTA | 16U5079d | Mar 28, 2019 | 1.43 GB | OTA | OTA |
| 5.2 OTA | 16T6225 | Mar 27, 2019 | 1.43 GB | OTA | OTA |
| 5.2 OTA | 16T225 | Mar 27, 2019 | 1.43 GB | OTA | OTA |
| 5.2 OTA | 16T5225a | Mar 18, 2019 | 1.43 GB | OTA | OTA |
| 5.2 OTA | 16T5222a | Mar 11, 2019 | 1.43 GB | OTA | OTA |
| 5.2 OTA | 16T5212e | Mar 4, 2019 | 1.43 GB | OTA | OTA |
| 5.2 OTA | 16T5201c | Feb 19, 2019 | 1.43 GB | OTA | OTA |
| 5.2 OTA | 16T5191d | Feb 4, 2019 | 1.42 GB | OTA | OTA |
| 5.2 OTA | 16T5181f | Jan 24, 2019 | 1.42 GB | OTA | OTA |
| 5.1.3 OTA | 16S6535 | Jan 22, 2019 | 78 MB | OTA | OTA |
| 5.1.3 OTA | 16S535 | Jan 22, 2019 | 1.42 GB | OTA | OTA |
| 5.1.3 OTA | 16S5535a | Jan 7, 2019 | 1.42 GB | OTA | OTA |
| 5.1.3 OTA | 16S5531a | Dec 19, 2018 | 171 MB | OTA | OTA |
| 5.1.3 OTA | 16S5523a | Dec 10, 2018 | 81 MB | OTA | OTA |
| 5.1.2 OTA | 16S6046 | Dec 6, 2018 | 80 MB | OTA | OTA |
| 5.1.2 OTA | 16S46 | Dec 6, 2018 | 155 MB | OTA | OTA |
| 5.1.2 OTA | 16S5046a | Nov 15, 2018 | 1.42 GB | OTA | OTA |
| 5.1.2 OTA | 16S5042a | Nov 7, 2018 | 1.42 GB | OTA | OTA |
| 5.1.1 OTA | 16R6600 | Nov 5, 2018 | 118 MB | OTA | OTA |
| 5.1.1 OTA | 16R600 | Nov 5, 2018 | 1.42 GB | OTA | OTA |
| 5.1 OTA | 16R6591 | Oct 30, 2018 | 78 MB | OTA | OTA |
| 5.1 OTA | 16R591 | Oct 30, 2018 | 1.42 GB | OTA | OTA |
| 5.1 OTA | 16R5589c | Oct 22, 2018 | 168 MB | OTA | OTA |
| 5.1 OTA | 16R5584a | Oct 15, 2018 | 155 MB | OTA | OTA |
| 5.1 OTA | 16R5577c | Oct 9, 2018 | 111 MB | OTA | OTA |
| 5.1 OTA | 16R5568d | Oct 2, 2018 | 175 MB | OTA | OTA |
| 5.0.1 OTA | 16R382 | Sep 27, 2018 | 52 MB | OTA | OTA |
| 5.1 OTA | 16R5559d | Sep 18, 2018 | 152 MB | OTA | OTA |
| 5.0 OTA | 16R364 | Sep 12, 2018 | 1.42 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.