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Apple Watch Series 4 (40mm, LTE) firmware

65 official files for Apple Watch Series 4 (40mm, LTE).

Model numbers
Watch4,3, N141sAP
Latest OS
watchOS 6.3.1
Shipped with
watchOS 5.0

All versions (65)

Latest by region

All versions (65)

Version OS Region Type Released Size Apple signing
watchOS 5.3.10 5.3.10 Global OTA update 1.37 GB Signed
watchOS 6.3.1 6.3.1 Global OTA update 1.44 GB Signed
watchOS 6.3 6.3 Global OTA update 1.44 GB Not signed
watchOS 5.3.9 5.3.9 Global OTA update 1.37 GB Signed
watchOS 5.3.8 5.3.8 Global OTA update 1.37 GB Not signed
watchOS 5.3.7 5.3.7 Global OTA update 1.37 GB Not signed
watchOS 5.3.6 5.3.6 Global OTA update 1.37 GB Not signed
watchOS 5.3.5 5.3.5 Global OTA update 1.37 GB Not signed
watchOS 5.3.4 5.3.4 Global OTA update 1.37 GB Not signed
watchOS 6.1.1 6.1.1 Global OTA update 1.43 GB Not signed
watchOS 5.3.3 5.3.3 Global OTA update 1.37 GB Not signed
watchOS 6.1 6.1 Global OTA update 1.42 GB Not signed
watchOS 6.1 6.1 Global OTA update 1.42 GB Not signed
watchOS 6.1 6.1 Global OTA update 1.42 GB Not signed
watchOS 5.3.2 5.3.2 Global OTA update 1.37 GB Not signed
watchOS 6.1 6.1 Global OTA update 1.40 GB Not signed
watchOS 6.0.1 6.0.1 Global OTA update 1.41 GB Not signed
watchOS 6.1 6.1 Global OTA update 1.40 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.41 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 5.3.1 5.3.1 Global OTA update 1.37 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 5.3 5.3 Global OTA update 1.37 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 5.3 5.3 Global OTA update 1.37 GB Not signed
watchOS 5.3 5.3 Global OTA update 1.37 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 5.3 5.3 Global OTA update 1.37 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.40 GB Not signed
watchOS 5.3 5.3 Global OTA update 1.37 GB Not signed
watchOS 6.0 6.0 Global OTA update 1.42 GB Not signed
watchOS 5.3 5.3 Global OTA update 1.37 GB Not signed
watchOS 5.3 5.3 Global OTA update 1.37 GB Not signed
watchOS 5.2.1 5.2.1 Global OTA update 1.37 GB Not signed
watchOS 5.2.1 5.2.1 Global OTA update 1.37 GB Not signed
watchOS 5.2.1 5.2.1 Global OTA update 1.37 GB Not signed
watchOS 5.2.1 5.2.1 Global OTA update 1.37 GB Not signed
watchOS 5.2.1 5.2.1 Global OTA update 1.37 GB Not signed
watchOS 5.2.1 5.2.1 Global OTA update 1.37 GB Not signed
watchOS 5.2 5.2 Global OTA update 1.36 GB Not signed
watchOS 5.2 5.2 Global OTA update 1.36 GB Not signed
watchOS 5.2 5.2 Global OTA update 1.36 GB Not signed
watchOS 5.2 5.2 Global OTA update 1.36 GB Not signed
watchOS 5.2 5.2 Global OTA update 1.36 GB Not signed
watchOS 5.2 5.2 Global OTA update 1.36 GB Not signed
watchOS 5.2 5.2 Global OTA update 1.36 GB Not signed
watchOS 5.1.3 5.1.3 Global OTA update 1.35 GB Not signed
watchOS 5.1.3 5.1.3 Global OTA update 1.35 GB Not signed
watchOS 5.1.3 5.1.3 Global OTA update 1.35 GB Not signed
watchOS 5.1.3 5.1.3 Global OTA update 1.35 GB Not signed
watchOS 5.1.2 5.1.2 Global OTA update 1.35 GB Not signed
watchOS 5.1.2 5.1.2 Global OTA update 1.35 GB Not signed
watchOS 5.1.2 5.1.2 Global OTA update 1.35 GB Not signed
watchOS 5.1.1 5.1.1 Global OTA update 1.35 GB Not signed
watchOS 5.1 5.1 Global OTA update 1.35 GB Not signed
watchOS 5.1 5.1 Global OTA update 1.35 GB Not signed
watchOS 5.1 5.1 Global OTA update 1.35 GB Not signed
watchOS 5.1 5.1 Global OTA update 1.35 GB Not signed
watchOS 5.1 5.1 Global OTA update 1.35 GB Not signed
watchOS 5.0.1 5.0.1 Global OTA update 1.36 GB Not signed
watchOS 5.1 5.1 Global OTA update 1.35 GB Not signed
watchOS 5.0 5.0 Global OTA update 1.36 GB Not signed

Apple only lets you restore versions it is still signing. Signing status is checked every hour.

How to install firmware on Apple Watch Series 4 (40mm, LTE)