Does the size make sense? A firmware update that is only 20KB or a driver that is 4GB is a major red flag.
If you’re tech-savvy, open the file inside a Virtual Machine (VM) or a "Sandbox" environment to see how it behaves without risking your main operating system.
Many manufacturers use these codes for specific hardware patches (e.g., for car head units, SSDs, or routers). Download S100224 rar
Sometimes these files are encrypted so that antivirus software cannot scan the contents until it’s already on your machine. Safety Checklist
Older or niche hardware drivers are frequently archived this way. The Risks of .RAR Files Does the size make sense
Proprietary software often generates dated backups using these formats.
You can’t see what’s truly inside (like a .exe or .scr virus) until you extract it. Many manufacturers use these codes for specific hardware
Unless you are 100% certain of what "S100224" represents for your specific device or software, it is safer to leave it unclicked.