Do you have the of the archive, or can you clarify which device you are trying to modify?

: Use a utility like WinRAR or 7-Zip to right-click the first part and select "Extract."

: Depending on the contents, you may need tools like QFIL (Qualcomm Flash Image Loader) or fastboot if it is a firmware package.

: Indicates that this is the first segment of a multi-part compressed archive. How to Use This File

If this is part of a specific development project or tutorial from a forum (like XDA-Developers), the "complete guide" would be the specific forum post where the link was originally shared.