When the download is successful, unzip the file flash oppo a83.Inside the file there will be a directory (sn flash tool) (driver) and (firmware).
step 1 : install driver (driver folder) skip this step if the driver is installed
step 2 : select flash tool exe (sn flash tool )
step 3 : choose download >>>>>>> choose scat file
step 4: choose file scat (firmware folder)
step 5 : Hit the key (vol-) + (power) connect the phone to PC via usb cable and click download button
step 6 : wait for completion
*** note ***
stock firmware oppo a83 that we share is provided by the phone distributor.It helps to restore your phone to its original state. Fixes some bugs such as hanging the boot logo, software error, update error, and dead issue, and more ………..