Because this tool is popular, fake websites inject malware into fake “v3.1” downloads. Additionally, antivirus software (especially Windows Defender) will flag it as hacktool or riskware. This is a false positive because the tool uses exploit-like methods to reset locks.
Have a trusted Samsung tool you actually use? Let me know in the comments—I’ll test it on an air-gapped machine. download samfirm a.i.o v3.1 tool