It is an official flash tool supports: Oppo A1, A3, A37, A37f, A39, A57, A71, A77, Oppo A77 (Mediatek), A83, R11s Plus, R11s, R11 Plus, R11, Oppo F1s, F3, F3 Plus, F5 & F5 Youth, Oppo F7 & F7 Youth, R9s Plus, R9s, R15 Pro, R15.