samsung galaxy j3 clone Spreadtrum Rom – Android 6.0. Firmware clone
Make sure you are downloading the exact ROM of the device you want to flash
because flashing a wrong rom or preloader, will make the device completely dead.
1 first download and install Spreadtrum USB Driver
https://mrmoas.blogspot.com/2018/04/how-to-install-spreadtrum-phone-usb.html
download SPD_Upgrade_Tool
download ROM