While generally safe and verified by community members on 4PDA and XDA , always back up data if possible, as factory resets are often involved. SamFW FRP Tool V4.1: Unlock Samsung Devices Easily - Ftp
The tool has expanded significantly beyond its v1.0 roots. According to the official SamFw blog , the latest versions now include: samfw frp tool v1.0
The tool itself is legal. It is a piece of software that modifies data on a device you own. However, the intent defines legality. While generally safe and verified by community members
