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

IPHONE 6S PLUS 12.1.2 16C104

IPHONE_5.5_12.1.2_16C104_RESTORE.IPSW
Categories:
12.1.2
Version:
3.03 GB
Size:
December 18, 2018
Date:
Unsigned
Status:
The file can help you a lot ?