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

IPHONE 8 PLUS 12.1.4 16D57

Download
IPHONE_5.5_P3_12.1.4_16D57_RESTORE.IPSW
Categories:
12.1.4
Version:
3.5 GB
Size:
02/07/2019
Date:
Signed
Status:
The file can help you a lot ?