IPSW Portal

Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 6.0 (17R5491t) for Apple Watch Series 4 (40mm, LTE)

Version:	6.0
Build:	17R5491t
Signed:	No
Size:	0.79 GB
Release Date:	2019-06-03 19:29:11
Upload Date:	2019-06-01 21:07:17

Secure download directly from Apple's servers