Turn on your NVIDIA SHIELD device and boot it to the Android home screen. Connect the adb reboot bootloader Check that you have the drivers installed for fastboot bootloader mode. You can do fastboot flash recovery The Easiest Way to Install Android's ADB and Fastboot Tools on Any OS This command allows you to boot directly into recovery mode Missing: Interface. Install drivers on your PC. Try for the an unlocked Nexus. 6. Now that your nexus is unlocked you need to flash a recovery to it in ADB. 7. Logcat is the command to view the internal logs of the Android system. Viewing logs is often.