Good, but your undocumented explanations can lead people to mistake!I just made this and worked flawless:
install twrp(rus) via fastboot and REBOOT TO TWRP (critical step)
format data and then reboot again to recovery
so far, no bug or nothing. everything works.. its a bit shorter than the original guide, if any wanna give it a try and dont want to download so many files hehe
-TWRP (rus) what version?
-Fastboot flashed or use of the "zip" package?
- no mention how you reboot TWRP! (critical step)
-Copy rom!!! Which one? do you use android10 weekly latest or stable android9?