You can use Wandoujia to flash oppo mobile phones. The specific steps to flash Wandoujia are:

1. Install Wandoujia APP on your computer.

2. Connect the OPPO phone to the computer using a UBS cable.

3. Open Wandoujia and click one-click flash.

4. Wait until the flashing is completed. Make sure to back up important data and software before flashing your phone.