If you see usage: simg2img sparse_image_file raw_image_file , the tool is ready.
: It is a tiny, compiled C/C++ executable that executes quickly without draining system resources. Windows Compatibility Simg2img.exe Download
This article explains what this tool is, where to download it safely, and how to use it effectively. where to download it safely
: Extracting files from one device's firmware to use on another. Simg2img.exe Download