There is a specific kind of panic that sets in when a Samsung Galaxy device refuses to boot past the logo. You see the white "Samsung" text, the screen goes black, and the text reappears—an endless loop known as a "soft brick."
: The standard and most reliable tool for Samsung devices. It allows you to flash official stock firmware (BL, AP, CP, CSC files) to restore the phone to factory settings. It is best for users who can find their specific model's firmware on sites like FRP Hijacker by Hagard : A popular utility that includes a dedicated "Softbrick Fixer"
: Official support and safety, though it may not work if the device isn't recognized at all.