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

IPHONE 8 PLUS 13.3 17C54

Download
IPHONE_5.5_P3_13.3_17C54_RESTORE.IPSW
Categories:
13.3
Version:
3.91GB
Size:
10th December 2019
Date:
Signed
Status:
The file can help you a lot ?