1. Unlock your bootloader via HTCDev and install a custom recovery. 2. Download the ROM and place it on your virtual SD card. 3. Do a nandroid backup! 4. Extract boot.img from ROM zip and flash it using ‘fastboot flash boot boot.img’. 5. Use 'fastboot erase cache' to avoid boot issues. 6. Go into recovery and install the ROM. 7. Please choose fullwipe if you are asked, highl recommended if you rom from another rom. 8. Reboot the device and enjoy!