Download iOS 13.6.1 (17G80) for iPhone XS Max (China)

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 iPhone11,4
iOS Version 13.6.1
Release Date 2020-08-12
Update Date 2020-08-07
Sha1sum
e5815c226c780e8e4ac53f26adbcc694030ba6a7
Sha256sum
a7059813a68e9e3b9b6a094a8f29156298b5594fe495cc523ee218c0868e6165
md5sum
72373e0a61ec2fef14414f2a42170b55
Size 4.96 GB
FileName
iPhone11,2,iPhone11,4,iPhone11,6,iPhone12,3,iPhone12,5_13.6.1_17G80_Restore.ipsw
Status

Download IPSW (4.96GB) Check device info
Release Notes

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

iOS 13.6.1 includes bug fixes for your iPhone.

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website: https://support.apple.com/kb/HT201222