FirmwareApple Watch Ultra 4
Device identifier: Watch8,1Architecture: arm64e.x1SoC: S11
Restore IPSWDelta OTAFull OTAOther Firmware
Signing is specific to the device and file. A signed build does not guarantee a downgrade or successful installation.
watchOS 27.2 RC24S116·Oct 19, 2026·620.8 MB
Delta OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·1.28 GB
Delta OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·293.6 MB
Other FirmwareRelease CandidateNot applicable
watchOS 27.2 RC24S116·Oct 19, 2026·1.28 GB
Delta OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·1.21 GB
Delta OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·805.3 MB
Delta OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·1.28 GB
Delta OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·4.29 GB
Full OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·1.24 GB
Delta OTARelease CandidateUnknown
watchOS 27.2 RC24S116·Oct 19, 2026·1.28 GB
Delta OTARelease CandidateUnknown
watchOS 27.2 beta 424S5112a·Oct 13, 2026·4.29 GB
Full OTABetaUnknown
watchOS 27.2 beta 424S5112a·Oct 13, 2026·1.24 GB
Delta OTABetaUnknown
Firmware availability varies by device. This archive contains verified source records and may not include every historical release.
