IPSW Portal

Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 5.1.3 (16S5523a) for Apple Watch Series 2 (38mm)

Version:	5.1.3
Build:	16S5523a
Signed:	No
Size:	1.25 GB
Release Date:	2018-12-10 18:09:56
Upload Date:	2018-12-05 22:51:09

Secure download directly from Apple's servers