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Apple Watch Series 3 (GPS + Cellular) 38mm

Apple Watch Series 3 (GPS + Cellular) 38mm

  • ModelWatch3,1
  • Boardn111sap
  • SoCT8004
  • ChipApple S3
Signed

watchOS 8.8.2 (19U526) is signed

Apple's signing server is signing this firmware, so you can restore or update to it now. Checked with Apple .

Signed since release, Jul 27, 2026. Apple lists it until Feb 3, 2027.

Released July 27, 2026

Download OTA 1.7 GB

From updates.cdn-apple.com (Apple). Signet never hosts files.

Restore images (IPSW) 3

VersionReleasedStatusExpiresSize
watchOS 8.8.2 19U526 OTAJul 27, 2026Signed Signed by Apple Signed since release, Jul 27, 2026. Apple lists it until Feb 3, 2027. Apple doesn't publish signing end dates; Signet records them by checking on a schedule. Apple's listed expiration Apple's update server (gdmf.apple.com) lists this build until February 3, 2027. Apple can stop signing it sooner, usually a week or two after the next release.1.7 GB
Download
watchOS 6.3.1 17U224 OTA-Signed Signed by Apple Signed in every check since Oct 19, 2026. Apple doesn't publish signing end dates; Signet records them by checking on a schedule.-1.5 GB
Download
watchOS 5.3.10 16U711 OTAJul 27, 2026Signed Signed by Apple Signed since release, Jul 27, 2026. Apple lists it until Feb 3, 2027. Apple doesn't publish signing end dates; Signet records them by checking on a schedule. Apple's listed expiration Apple's update server (gdmf.apple.com) lists this build until February 3, 2027. Apple can stop signing it sooner, usually a week or two after the next release.1.4 GB
Download

Over-the-air updates 2

The exact packages Apple's update server offers this device. Encrypted (.aea) packages list the key Apple publishes with them.

VersionTypeSizePackage
watchOS 8.8.2 19U526Full1.7 GB.zip
Download
watchOS 5.3.10 16U711Full1.4 GB.zip
Download

Specifications

Chip
  • S3 SiP with dual-core processor
  • W2 Apple wireless chip
Display
  • 42mm 312 by 390 pixels
  • 38mm 272 by 340 pixels
  • Retina OLED display 1000 nits brightness
Battery
  • Built-in rechargeable lithium-ion battery Up to 18 hours
Wireless
  • Wi-Fi 802.11b/g/n 2.4GHz
  • Bluetooth 4.2
Water resistance
Water resistant 50 meters
Size & weight
  • 33.3 × 11.4 mm
  • 36.4 mm
  • 34 × 11.8 mm
  • 36.5 mm

Source: Apple Tech Specs