This is the standard way to enter Fastboot mode without external tools. your OPPO A37 completely.
This method has been successfully used by community members to unlock bootloaders and install custom recoveries on Oppo A37 devices even without native Fastboot Mode support. how to open fastboot mode on oppo a37 verified
: Open a command window in your ADB platform-tools folder and type: adb reboot bootloader This is the standard way to enter Fastboot
⚠️ : Many Oppo A37 users report that Fastboot Mode is officially restricted by Oppo starting from 2016 models. On most standard A37 units, attempts to enter Fastboot may result in a normal boot instead of the expected Fastboot interface. : Open a command window in your ADB
To absolutely verify the connection, keep the phone plugged into your computer, open your command window, and type: fastboot devices If a string of alphanumeric characters followed by the word "fastboot" appears, your device is properly connected and ready for commands. Troubleshooting Common Issues Issue 1: Device Bootloops or Reboots Normally