: Navigate back to Settings > Additional Settings > Developer Options and toggle on USB Debugging .
This is the most reliable method if your physical buttons are faulty. Flash with Fastboot - Android Open Source Project
If your physical buttons are not working correctly, you can use a computer to trigger the mode. how to open fastboot mode on oppo a37 verified
Sam held down the Power button for 10 seconds. The phone rebooted normally, and Alex’s home screen appeared—photos intact.
Phone will reboot directly into Fastboot mode. : Navigate back to Settings > Additional Settings
This is the fastest and most common way to access Fastboot Mode on your device.
Go to → Turn on USB debugging .
: Ensure your OPPO A37 has at least 50% battery capacity to prevent unexpected shutdowns during system maintenance.
To use ADB commands, you need the proper drivers on your Windows computer: Sam held down the Power button for 10 seconds
Install minimal ADB and Fastboot drivers on your computer.