To enter Fastboot mode on your OPPO A37, follow the steps below using the hardware key combination or ADB commands. Method 1: Hardware Key Combination
: If your PC doesn't recognize the device in Fastboot, ensure you have installed the correct OPPO USB Drivers Locked Bootloader : Some commands (like fastboot flash how to open fastboot mode on oppo a37 verified
If your phone boots normally and you have USB Debugging enabled: To enter Fastboot mode on your OPPO A37,