Choose aProduct→Choose aPlatform→Choose aVersion→ClickDownload

Download 12.3 (16F156) for iPhone 6s+

Version:	12.3
Build:	16F156
Signed:	No
Size:	3.11 GB
Release Date:	2019-05-13 17:00:28
Upload Date:	2019-05-08 22:53:54
SHA1:	8c2df962bfdb4b00fd5349bf78f59f75de07ef78
MD5:	94f4c4e23e12d6fbf438d1a7b7ce0a17
SHA256:	40f3e7207fd3cb6ce1fdc44221aa55d0e51cfc98d47697bcf5a326614bd791ba

Secure download directly from Apple's servers

IPSW Portal