@boygenuis said in New OnePlus One Issues on Fresh Install: debug: Error: Command failed: adb -P 5038 shell echo 1 error: device unauthorized. Device Unauthorized means that your phone forbids adb access. You have to solve that by enabling developer mode (the usual 7 touches on the kernel version, was it that one) and then allow usb debugging, and optionally also allow OEM unlocking the bootloader. then disconnect/reconnect the computer, you should get a popup to allow access for this machine. click OK and you should be in. As long as adb devices shows error messages, you don´t need to try start installing UT.