Follow below steps :
2. Now after you have downloaded it fire it up and make sure you have already installed latest version IDM on your PC, well if its not latest than you just need to click on Update in this tool and than go to your IDM and choose check for updates and update it too the latest version.
3. Now after you have updated it too the latest version you just need to crack it up so that its again full version and you can use it for as long as you wanted too.
4. So now just again go to IDM Cracker Tool and than click on Start and it will patch your IDM and now you will have a full working version of IDM.
Update & Use Again :
So now if any further version is released and you wanna update to that version just first click on Update in this tool and than update it in the official way IDM is updated, after update is completed just click on Start and it will again make your IDM full version.