IPSW Portal

Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 6.3 (17U216) for Apple Watch Series 5 (40mm)

Version:	6.3
Build:	17U216
Signed:	No
Size:	0.54 GB
Release Date:	2021-01-26 18:27:15
Upload Date:	2021-01-20 16:19:22

Secure download directly from Apple's servers