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

IPHONE XS MAX 12.1.4 16D57

Download
IPHONE11,4,IPHONE11,6_12.1.4_16D57_RESTORE.IPSW
Categories:
12.1.4
Version:
3.6GB
Size:
02/07/2019
Date:
Signed
Status:
The file can help you a lot ?