If you are not comfortable with the technical steps, seek help from a professional mobile repair technician. Otherwise, with the right preparation, you can successfully restore your OPPO F19s to full working order.
For a step-by-step visual on connecting your device and using a flash tool, you can watch this guide: oppo f19s flash file repairmymobile install
preloader.bin, scatter.txt, boot.img, system.img, vendor.img, etc. If you are not comfortable with the technical