Download iOS 15.3 (19D50) 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 15.3
Release Date 2022-01-26
Update Date 2024-06-03
Sha1sum
914e6b26b237965cbb5893847ec6ae6178e8c3e7
Sha256sum
c93ea7a3e7344f60e16a3c7c9a9652a0350750b5ef664cc9f0d9f135f4795118
md5sum
4a26a736960b37b6407c8d796639c3ce
Size 5.52 GB
FileName
iPhone10,3,iPhone10,6_15.3_19D50_Restore.ipsw
Status

Download IPSW (5.52GB) Check device info
Release Notes

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

iOS 15.3 includes bug fixes and security updates for your iPhone and is recommended for all users.

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

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