IPSW Portal

Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 5.3.5 (16U652) for Apple Watch Series 4 (40mm)

Version:	5.3.5
Build:	16U652
Signed:	No
Size:	0.05 GB
Release Date:	2020-02-18 18:07:08
Upload Date:	2020-02-11 02:11:27

Secure download directly from Apple's servers