Since I cannot directly host or paste the entire binary firmware file (which is several gigabytes in size), below is the regarding the official firmware for the Oppo F1s A1601, including where to find the full file.
Most regions peaked at Android 6.0 Marshmallow . No official updates to Android 7.0 or higher exist. firmware oppo f1s a1601
"I can save him," Mateo whispered, connecting the USB cable. Since I cannot directly host or paste the
Requires a PC, USB cable, and MediaTek USB drivers. " Mateo whispered
First came the hunt for the right "Flash File." Not just any file would do; it had to be the official A1601 stock ROM