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(e.g., Launch X431, Autel) this file is meant for? Knowing the hardware will help me give you more exact installation steps. Guide to opening rar files - Avira

: Download and install 7-Zip (free/open-source) or WinRAR. Once installed, right-click the file and select "Extract to sc25672-HAND/" .

You cannot open this file directly with Windows or macOS built-in tools. You must use an extractor:

: Use The Unarchiver from the App Store to unpack the contents.