Download iOS 12.1.3 (16D39) for iPhone X (GSM)

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 iPhone10,6
iOS Version 12.1.3
Release Date 2019-01-22
Update Date 2019-01-11
Sha1sum
e1d1299ec384a029214380a5c096d7b2fae571f6
Sha256sum
md5sum
8aede6573c89a6adde56dc16dacc9a17
Size 3.31 GB
FileName
iPhone10,3,iPhone10,6_12.1.3_16D39_Restore.ipsw
Status

Download IPSW (3.31GB) 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