[firstname]_[firmware version]_[customization]_[device type]_[date].rar

Use binwalk (Linux) to scan the RAR for embedded file signatures without extracting.

Use Windows: CertUtil -hashfile "tanya y157 custom1 garrett 020708.rar" MD5 Use Linux/macOS: md5sum "tanya y157 custom1 garrett 020708.rar"

If you regularly create custom archives, adopt a clear naming convention:

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