If you tell me what happens when you try to open it, I can tell you exactly how to fix it.
Use The Unarchiver , a free tool from the Mac App Store that handles .7z files easily. LBC1.7z
Install 7-Zip , the free, official software. Right-click the file, select 7-Zip , and choose "Extract Here" or "Extract to LBC1\" . Alternative: Use free software like WinRAR or PeaZip . macOS: If you tell me what happens when you
If the file is password-protected, you must enter the password provided by the original source to open it. official software. Right-click the file