makc-ko
1) Download and extract the lsec-downgrade file.
https://Ariesasustor.ezconnect.to/share/cFkTeC2bE
2) Extract v3.6-1 to the root directory of the USB flash drive, delete lsec6318update. Extract v3.6-2 on your computer, copy lsec6318update to the root directory of the USB flash drive. And finally copy lsec-downgrade to the root directory of the USB flash drive.
3) Downgrade.
If you don't have it, here is v3.6-1:
https://disk.yandex.com/d/U4TkpNCt1r8Fdw