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

IPHONE 11 PRO 13.1.1 17A854

IPHONE12,3,IPHONE12,5_13.1.1_17A854_RESTORE.IPSW
Categories:
13.1.1
Version:
4.28 GB
Size:
09/27/2019
Date:
Unsigned
Status:
The file can help you a lot ?