Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 13.5.1 (17F80) for iPhone 6s

Version:	13.5.1
Build:	17F80
Signed:	No
Size:	3.52 GB
Release Date:	2020-06-01 17:06:21
Upload Date:	2020-05-28 02:31:58
SHA1:	6b6d13128fcbd0229ae7bd9c4e618bd82c4609ef
MD5:	661c6c001868f4fe7bf0b838c25b6967
SHA256:	7464365921c5ce0c3a12c5b31a9b6be8fb060de58ddb2921f2d38bcfdb90e17b

Secure download directly from Apple's servers

IPSW Portal