Most "fixes" are packed with obfuscators that trigger false positives—or real malware. You would typically be instructed to turn off Windows Defender.
If you still choose to download, scan the archive with: facebook group poster v4 fix 5 download
Typical malicious indicators in fake "v4 fix 5" files: Most "fixes" are packed with obfuscators that trigger
A keygen or text file with a serial number is usually included. Typical malicious indicators in fake "v4 fix 5"