Follow Steps carefully:
- Uninstall the previous version using IObit uninstaller or Revo uninstaller.
- Install the software with IDM ( For pure downloading process ).
- Unzip the downloaded file WinRAR or Mount the .iso file with Ultra ISO.
- Install Setup first.
- Open the software.
- Open Instruction or serial key .txt .
- Copy the key and paste in required area.
- Done
Antivirus always block the cracking procedure and Internet will
also create problems.