OnePlus One is a powerful device and there is no denying it, but there’s no wonder if you’re trying to root and modify your OnePlus One. If you’re trying to root your device or to flash any system image, you’ll need to boot into OnePlus One fastboot mode in the first place. Once you’re in fastboot mode, you can unlock the bootloader on your device and flash the system images like recovery, boot or the entire firmware itself. It’s very simple to enter the OnePlus One fastboot mode but most users usually forget the hardware key combinations. So, here’s a simple tutorial on how to boot into OnePlus One fastboot mode.