EFT Pro is a program which is developed by Easy-Firmware Tool. Easy-Firmware team is one of the oldest team in their field. EFT Pro mostly focuses solutions on Apple and Samsung devices. EFT Pro's main solution is adding more language support to Hong Kong, China Samsung devices. You can check their official forum to get more information about the tool and usage policy from https://forum.gsmhosting.com/vbb/f1014/