Connect these to an and follow the same writing steps. ISP is more forgiving but slower (max 20 MHz vs 48 MHz for JTAG).
Tip: Many online resources and Easy JTAG official forums provide diagrams for Oppo A3s pinouts. Often, these pads are located under a metal shield near the SIM card reader or under the CPU shielding. You may need to scratch the mask off the test points slightly to get a good connection. oppo a3s dead boot repair easy jtag