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

IPHONE 8 12.1.3 16D39

Download
IPHONE_4.7_P3_12.1.3_16D39_RESTORE.IPSW
Categories:
12.1.3
Version:
3.3 GB
Size:
01/22/2019
Date:
Signed
Status:
The file can help you a lot ?