Can't create Sharepoint List from imported list template

Question

I have a list with some lookup fields. On their list templates, I followed below steps:

• Rename the original .STP to .CAB

• Extract its manifest.xml to a local folder (lets call it {workingfolder})

• Search for the ProductVersion element. This should have a value of 3 Change its value to 4

• Repackage the manifest.xml into a .CAB. I've done this by using makecab.exe in the C:\Windows\System32 folder

• Syntax: makecab.exe {workingfolder}\manifest.xml {workingfolder}{template-name}.cab Change the generated cabinet's extension from .CAB back to .STP and upload it into the _catalogs/lt

  I uploaded List Template using elements.xml. But I can't even access List Template using code (given below).

  SPListTemplate listTemplate=null;
      foreach (SPListTemplate template in SPContext.Current.Web.ListTemplates)
      {
  
          if (template.Name.Equals(templateName))
          {
              listTemplate = template;
          }
  
      }
      return listTemplate;
  

I uploaded the same List Template manually with another name and debugged the code. It returns only the List Template which uploaded manually. I know this is a duplicated question, but no solution is working for me.