If your goal is simply to repair a bricked device, booting into (Volume Down + Power, then release Power) and performing a factory reset is often a safer and more accessible option for the average Oppo A58 user.
Are you trying to unlock your bootloader or just troubleshooting a software issue? How to Enable Fastboot Mode on your Phone (Best Method)
fastboot devices
If you are planning to flash files, make sure to follow the specific instructions for your firmware version to avoid damaging your device.
部分 Oppo A58 机型的 Recovery 模式中也提供了进入 Fastboot 的入口。操作步骤如下： how to open fastboot mode on oppo a58
Keep holding them down until the OPPO logo appears on your screen. As soon as the logo displays, release the Power Button but continue to hold the Volume Down button .
To boot into Fastboot mode, type the following command and press : adb reboot bootloader Use code with caution. If your goal is simply to repair a
Once the phone is in Fastboot mode, the touchscreen will work. You must use the physical hardware buttons:
Open Command Prompt on your computer and type: Once the phone is in Fastboot mode, the
Press and hold the for roughly 10 to 12 seconds. The Fastboot text will disappear, the phone will shut down, and it will automatically reboot back into standard ColorOS. Option 2: Command Prompt