These video guides provide visual steps for entering and exiting Fastboot Mode on your OPPO device:
Type this command to reboot into fastboot: adb reboot bootloader
FAILED (remote: 'Device already : lock!) how to open fastboot mode on oppo a37 better
: Open a command prompt or terminal on your PC (ensuring you have ADB tools installed) and type: adb reboot bootloader .
: Let go of both keys as soon as the Fastboot Mode screen appears. Method 2: Using ADB Command (Computer Required) These video guides provide visual steps for entering
This is the standard, fastest method, requiring no computer. Turn off your OPPO A37 completely.
Entering Fastboot mode on the (or A37f/A37fw ) is a critical step for developers and advanced users looking to unlock bootloaders or flash custom firmware. While most users use the hardware key combination, using ADB commands is often considered a "better" and more reliable method as it avoids timing issues with physical buttons. Method 1: The Fast & Reliable ADB Way (Recommended) Turn off your OPPO A37 completely
You should see a device serial number followed by “device.” If you see “unauthorized,” look at your phone screen and grant the USB debugging permission.
There are several reasons why you might want to access fastboot mode on your Oppo A37:
You likely released the Volume Down button too early. Ensure you hold it down continuously until the boot screen changes.