Mediafire provide you resume facility but when you shutdown your PC or pause the downloaded file which you are downloading from Internet Download Manager which is best download manager till date which provide best speed to download files.so when when you trying to resume your files there is an error that the link address is changed and link expaire or your session is closed.
Here is a trick to resume the files.
you’ll see a message that the link is expired.
press YES.
you’ll be redirected to that page of Mediafire again.
when the page is completly loaded press TOOLS>OPTIONS>Privacy>show cookies. search for ‘mediafire.com’ in the box.
delete all cookies found there. after doing that,
press CLOSE > OK.
after that click on the ” click here to download files” in mediafire site.
the page is refreshed and you got a new link to download the file.
right click on the link and copy the link location.
after coping the link location go to IDM and select the file you want to resume for downloading,
right click and select > properties > in address field paste the copied link location you copy from the mediafire site and finally your downloading starts from where you last before.
enjoy downloading !!!!!
your comment are appreciated please comment if this tricks works for you