hentaiOS Flash Guide
QKIvan1.Restart your phone to fastboot.
2.Run:
fastboot flash boot boot.img
fastboot flash vendor_boot vendor_boot.img
3.Reboot to Recovery(if “No command” is displayed,Press and hold the Power button. While you hold Power, press the Volume Up button and let go of both buttons quickly.)
4.Scroll to "Wipe data/factory reset" and press the Power button.
5.Scroll to "Apply update from ADB" and press the Power button.
6.Run:
adb sideload yourrompath.zip
7.Reboot to system