Additionally, this method requires that you have a PC, the correct USB drivers for your Oppo A5 2020 installed, and the Android Platform Tools (ADB & Fastboot) set up on your computer. You also need to enable USB Debugging on your phone from the Developer Options menu.
However, the developer community (primarily on XDA Forums and 4PDA) has produced of TWRP that function reliably. The most stable versions are typically based on TWRP 3.4.0 or 3.5.0. oppo a5 2020 twrp
This guide assumes you have an unlocked bootloader and a Windows PC with ADB & Fastboot installed. Additionally, this method requires that you have a