IPSW Portal

Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 4.3 (15T5165e) for Apple Watch Series 1 (38mm)

Version:	4.3
Build:	15T5165e
Signed:	No
Size:	0.3 GB
Release Date:	2018-01-25 18:04:21
Upload Date:	2018-01-20 22:25:23

Secure download directly from Apple's servers