update fastboot and adb fastboot oem unlock adb debug enchilada reboot to fastboot fastboot devices c3d39f68 fastboot fastboot boot twrp-3.2.1-0-enchilada.img flash twrp-installer-3.2.1-0-enchilada.zip boot twrp-installer-3.2.1-0-enchilada.zip twrp-installer-3.2.1-0-enchilada.zip flash Havoc-OS-v2.0-20181022-oneplus6-Official.zip boot Havoc-OS-v2.0-20181022-oneplus6-Official wipe & reboot