Download iOS 14.8 (18H17) for iPhone 12 Pro Max

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 iPhone13,4
iOS Version 14.8
Release Date 2021-09-13
Update Date 2021-09-10
Sha1sum
ecc005f9f91fe64e7bbe1bde2bae341561de98a2
Sha256sum
0403d402436bbc4e672169eabff323d246c34a493a9c9b977793db2d9234ea18
md5sum
30544529216aad46355d5e8ba58c05bb
Size 5.34 GB
FileName
iPhone13,4_14.8_18H17_Restore.ipsw
Status

Download IPSW (5.34GB) Check device info
Release Notes

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

This update provides important security updates 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