frozen on : you have the kernelpath already installed, Omitting ...

[LegacyIOS-RU]

[] Fixed firmwares suscessfully
IOS 13 dualboot or bootx option detected, we are going to use the bootx boot process
[] Adding the new modified boot images: kernelcache, root_hash, StaticTrustCache, devicetree...
[] Copying the new boot images to work with
dtre
[] Patching kernel ...
[] If this fails, please run python3 -m pip uninstall lzss, and re-run the script
[] Checking if a jailbreak is installed
[] ios 13 detected so we will be automatically installing a jailbreak
[] Jailbreak detected
[-] you have the kernelpath already installed, Omitting ...
scp: /mnt8/System/Library/Caches/com.apple.kernelcaches/kcache.patched: No such file or directory

[LegacyIOS-RU]

ios 13.7,iphone 6s plus

[mrgarbagegamer]

Check the discord server if you can for some help but provided you're running on Linux, do the following:

git pull
git checkout kerneldiff
sudo ./dualboot.sh --dualboot <ios-version> --dont-create-part --bootx (if you've already attempted and haven't run restorerootfs)
sudo ./dualboot.sh --dualboot <ios-version> --bootx (run this otherwise)