Download iOS 15.3 (19D50) for iPhone 13

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 iPhone14,5
iOS Version 15.3
Release Date 2022-01-26
Update Date 2022-01-23
Sha1sum
64041d6ab71ba36c30a151164c328bfa1543f93d
Sha256sum
ca2a99b7dc6695d30aca501eea91908e2752f12fb13eeb9ee659f95a30f24d64
md5sum
64996456e56e257b0c633496c62a0c31
Size 6.18 GB
FileName
iPhone14,5_15.3_19D50_Restore.ipsw
Status

Download IPSW (6.18GB) 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