iPhone iOS Firmware iPhone ipsw firmware download that provided by Apple, when you do the relevant operation at your own risk.

IPHONE 6S 12.1.1

IPHONE_4.7_12.1.1_16C50_RESTORE.IPSW
Categories:
12.1.1
Version:
2.91 GB
Size:
December 6, 2018
Date:
Unsigned
Status:
The file can help you a lot ?