This method is ideal if you are already connected to a computer for flashing purposes.
This is the most reliable method, especially if you cannot access the operating system or are stuck in a boot loop.
FASTBOOT MODE
The ROG Phone 3 has two USB ports. Always use the side-mounted custom port (the black/orange one) for PC connection, as the bottom port is primarily for charging and may not support stable data transfer for flashing.
Look at your phone's screen and if a pop-up menu displays. Execute the target reboot command: adb reboot bootloader Use code with caution. how to open fastboot mode on asus rog phone 3
If your computer fails to detect the device once it is in Fastboot Mode, you likely need to install the specific Asus Android USB Drivers on your PC. Download them from the official Asus support page, install them via the Windows Device Manager, and try reconnecting the cable to the side port.
Keep holding both buttons until you see the ASUS logo or the black screen with the fastboot menu (showing the Android robot and text). This method is ideal if you are already
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Type the following command to ensure your device is recognized: adb devices (If prompted, authorize debugging on your phone screen). Always use the side-mounted custom port (the black/orange
Type adb devices and press Enter. Authorize the prompt on your phone screen if requested.
Ultimate Guide: How to Open Fastboot Mode on ASUS ROG Phone 3