Download iOS 12.1.3 (16D40) for iPhone XS

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

❌ This IPSW firmware is not being Signed by Apple

Firmware Identifier iPhone11,2
iOS Version 12.1.3
Release Date 2019-01-22
Update Date 2019-01-15
Sha1sum
71c2fe81d54fde1a2533c4f0dcd7bfc06f855f28
Sha256sum
md5sum
7c62710604fcb6fcff096ce8c1a34381
Size 3.36 GB
FileName
iPhone11,2_12.1.3_16D40_Restore.ipsw
Status

Download IPSW (3.36GB) Check device info
Release Notes

It should be noted that these are the official release notes for the from Apple

iOS 12.1.3 includes bug fixes for your iPhone or iPad. This update:

This release also includes bug fixes for HomePod. This update:

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222