The Oppo A37, launched in 2016, is a durable entry-level smartphone running Android 5.1 Lollipop with Oppo’s ColorOS. While it’s an older device, many users still rely on it for daily tasks or as a backup phone. If you are venturing into the world of Android modification—such as unlocking the bootloader, flashing custom recoveries (like TWRP), or rooting—you will need to access Fastboot Mode.
However, there is a well-known issue with the Oppo A37: the traditional “Volume Down + Power” button combination does NOT work to enter Fastboot. Oppo has a different, proprietary approach.
This article provides the “better” way to open Fastboot Mode on your Oppo A37—methods that are tested, reliable, and explained step-by-step to avoid confusion or bricking your device.
Entering Fastboot mode on the Oppo A37 is a straightforward process once you master the timing of the button presses. The key takeaway for Oppo devices specifically is the USB cable trick—plugging the cable in often triggers the mode more reliably than trying to time the button press during a boot loop.
Have you managed to enter Fastboot mode successfully? Let us know in the comments if you faced any specific hurdles!
Disclaimer: This guide is for educational purposes. Technipages and its authors are not responsible for any damage that may occur to your device while following these steps.
To open fastboot mode on an Go to product viewer dialog for this item.
, you can use either a manual hardware key combination or advanced software commands via a computer. Method 1: Hardware Key Combination (Recommended) This is the most direct way to access fastboot mode on the or its variants like the OPPO A37FW .
Power Off: Press and hold the Power button and turn off the device completely.
Key Combination: Simultaneously press and hold the Volume Up and Power buttons for several seconds.
Release: Let go of both keys once the Fastboot Mode screen appears on the phone. Method 2: Using ADB Commands (Advanced) how to open fastboot mode on oppo a37 better
If your hardware buttons are unresponsive, you can trigger fastboot mode through a PC. Prepare the Device:
Enable Developer Options by going to Settings > About Phone and tapping the Build Number seven times. In Developer Options, enable USB Debugging.
Prepare the PC: Install the Android SDK Platform-Tools to use ADB and Fastboot. Execute Commands: Connect your phone to the PC via USB Open a command prompt or terminal in the tools folder. Type adb reboot bootloader and press Enter. Your will automatically restart into fastboot mode. Troubleshooting and Related Modes Fastboot Mode OPPO A37 - HardReset.info
To enter Fastboot mode on an OPPO A37, you can use either a physical button combination or a computer-based command. Method 1: Using Hardware Buttons
This is the quickest way to access Fastboot mode if your phone is powered off. Power Off: Completely turn off your OPPO A37.
Hold Key Combination: Press and hold the Volume Up and Power buttons simultaneously for a few seconds.
Release Buttons: Let go of both keys as soon as the Fastboot Mode screen appears. Method 2: Using ADB Command (Computer Required)
This method is "better" if your physical buttons are faulty or if you are already connected to a PC for development work. Enable USB Debugging: Go to Settings > About Phone. Tap Build Number seven times to unlock Developer Options.
Go back to Settings > Additional Settings > Developer Options and toggle on USB Debugging.
Connect to PC: Plug your phone into your computer using a high-quality USB cable and select File Transfer mode. How to Open Fastboot Mode on Oppo A37:
Run ADB Command: Open a command prompt or terminal on your PC (ensuring you have ADB tools installed) and type: adb reboot bootloader.
Wait for Reboot: Your device will automatically restart into Fastboot mode. Exiting Fastboot Mode
If you need to leave this mode and return to normal operation:
Hold the Power button for about 10 seconds until the phone vibrates and restarts normally.
Are you looking to use Fastboot mode to unlock your bootloader or to flash a specific firmware file? Fastboot Mode OPPO A37FW - HardReset.info
To enter Fastboot mode on your (including the variants), you have two primary options: using a physical button combination or using a computer with ADB commands. Method 1: Physical Button Combination
This is the standard way to enter Fastboot mode directly from the device. : Completely turn off your by holding the button and selecting "Power Off." : Once the phone is off, press and hold the buttons simultaneously for several seconds.
: When you see the "Fastboot" text or logo appear on the screen, release both buttons. Method 2: Command Line (ADB)
If your buttons are faulty or you are already connected to a PC for debugging, you can use the Android Debug Bridge (ADB). Enable USB Debugging Settings > About Phone and tap "Build Number" 7 times to unlock Developer Options . In Developer Options, toggle on USB Debugging Connect to PC : Plug your phone into a computer where you have installed ADB and Fastboot tools Run Command : Open a command prompt or terminal and type: adb reboot bootloader Your phone will automatically restart into Fastboot mode. Navigating and Exiting Fastboot Mode
buttons to scroll through options like "Reboot" or "Recovery". : Press the button to confirm your choice. : To return to your normal Android system, simply select or hold the Disclaimer: This guide is for educational purposes
button for about 10–15 seconds until the device restarts normally. Troubleshooting
If your phone is stuck in a loop or enters "Recovery Mode" instead of Fastboot: Ensure you are using for Fastboot; Volume Down + Power typically enters Recovery Mode
Check for hardware issues; a stuck Volume Down button can cause the device to boot into Recovery Mode automatically. Are you entering Fastboot mode to unlock your bootloader flash a new firmware
To enter Fastboot mode on your , you can use either a physical button combination or a computer-based command. Method 1: Using Hardware Buttons
This is the most common way to enter the mode without needing extra cables or software. : Completely turn off your OPPO A37 by holding the Key Combination : Press and hold the Volume Down buttons simultaneously for a few seconds. Logo Release : Release both buttons as soon as you see the appear on the screen. Language Selection : You may enter a menu first where you need to select using the volume keys and the power button to confirm. Access Fastboot : In the Recovery menu that follows, look for and select Enter Fastboot (if available on your specific firmware version). Method 2: Using ADB (via Computer)
If your buttons aren't working or you prefer using a PC, use the Android Debug Bridge (ADB) Enable Debugging Settings > About Phone Build Number seven times to enable Developer Options . Then, go to Developer Options and turn on USB Debugging Connect to PC : Plug your phone into your computer via a USB cable. Run Command
: Open a command prompt or terminal window on your PC and type: adb reboot bootloader Automatic Restart : Your phone will automatically restart into Fastboot mode.
Fastboot mode (sometimes called "Download Mode" on older Oppo devices) allows you to flash firmware, unlock the bootloader, or run fastboot commands. The Oppo A37 is an older model (Android 5.1), so the standard "Volume Down + Power" method often fails. Here's the better, working method.
If you entered this mode by accident or are finished with your task:
This is the primary method used by technicians and advanced users.
Note: If the phone boots into the standard OS, you may have released the buttons too late or pressed the wrong volume key. Try again, ensuring you press Volume Down.