If you’ve ever downloaded a factory firmware for a modern Android device—especially from manufacturers like Samsung, OnePlus, Xiaomi, or Google—you may have noticed that the traditional boot.img file is gone. Instead, you’ll find a file named boot.img.lz4 .
Here’s a concise guide to extract boot.img.lz4 (a compressed boot image from many modern Android devices, especially those using LZ4 compression). extract boot.img.lz4
Use cd to go to the directory containing your file. Extract: lz4 -d boot.img.lz4 boot.img Use code with caution. The -d flag stands for "decompress." Method 3: Android (Using ZArchiver) If you’ve ever downloaded a factory firmware for
This method is GUI-based, but fewer LZ4 plugins are actively maintained. The CLI method is more reliable. Use cd to go to the directory containing your file
Hold Shift , right-click in the folder, and select Open PowerShell window here or Open in Terminal . Run the Command: Type the following command and hit Enter: .\lz4.exe -d boot.img.lz4 boot.img Use code with caution.
If you prefer not to use the command line, some firmware extraction tools integrate LZ4 decompression: