IPSW Portal

Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 9.3.3 (13G21) for iPhone 6s+

Version:	9.3.3
Build:	13G21
Signed:	No
Size:	0.05 GB
Release Date:	2016-06-06 16:47:19
Upload Date:	2016-06-02 21:55:33
Release Type:	Beta

Secure download directly from Apple's servers