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

IPHONE 6S PLUS 12.1

IPHONE_5.5_12.1_16B92_RESTORE.IPSW
Categories:
12.1
Version:
3.04 GB
Size:
October 31, 2018
Date:
Unsigned
Status:
The file can help you a lot ?