Download iOS 13.3 (17C54) for iPhone 6s+

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 iPhone8,2
iOS Version 13.3
Release Date 2019-12-10
Update Date 2024-06-03
Sha1sum
029520ef27d4a440a1bd738291a01f06f9b829e7
Sha256sum
30d99a1ca5b15b4e1fa96830cd7cead6b0251122a832462d12ca579e7d9017c1
md5sum
3a1d5140690d09d13b85ae1aec594cc5
Size 3.63 GB
FileName
iPhone_5.5_13.3_17C54_Restore.ipsw
Status

Download IPSW (3.63GB) Check device info
Release Notes

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

iOS 13.3 includes improvements, bug fixes and additional parental controls for Screen Time.

Screen Time

Apple News

Stocks

This update also includes bug fixes and other improvements. This update:

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

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