Yes installing works. I used PotatoNV, alternative you follow the obove tutorial to downgrade and use DCUnlocker. Installing the rom works with fastboot tool, not with custom recovery. After getting stuck on login screen I had to hard reset my mobile. When using custom rom its always important to take backup. If you really want to use PotatoNV you carefully need to open your device. I recommend usinh this tutorial https://openkirin.net/user_guide/openkirin-rom-installation-instructions/ because its the official one.Did you get it to work. I have a Mate 10 lite with android 8 and emui 8.0 with August 1 security patch. Thinking of trying potatoNV and custom rom. But I won't risk briking my phone cz i have no replacement. Can you provide with the details you weny through? And i see that when u flashes twrp u got stuck. Then how did you manage to get the custom RoM running without twrp. And how did you get it to work after getting stuck.