Download iOS 15.2.1 (19C63) for iPhone X (Global)

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 iPhone10,3
iOS Version 15.2.1
Release Date 2022-01-12
Update Date 2024-06-03
Sha1sum
15cf1c824d996ddafae629f7caac699679f55500
Sha256sum
6c149e9c92345410f9c78733b975865ab1dd1947b391cb25614173a721e91c6d
md5sum
fa6fef5c67b2c74e7236460e6fe42769
Size 5.53 GB
FileName
iPhone10,3,iPhone10,6_15.2.1_19C63_Restore.ipsw
Status

Download IPSW (5.53GB) Check device info
Release Notes

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

iOS 15.2.1 contains bug fixes for your iPhone including:

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

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