Keep v1.4.3 on your USB repair stick for legacy devices (S6, S7, S8, Note 8, J series, A series 2017/2018). For modern devices (S21, S22, A52, A73), you will need the paid version or a different tool like Chimera or Z3X.
: While the firmware downloads, the tech switches to the FRP tab. They connect the phone via USB in MTP mode and use the tool's built-in "Bypass FRP" feature.
This tool works best on Samsung devices running Android 7 Nougat and Android 8 Oreo. Android 9+ may require more recent solutions.