So you are moving to Firefox 5 & 6 (However Beta 7 version is also available) & facing difficulties with IDM compatibility, just follow these simple steps for integrating your IDM with newer versions of Mozilla Firefox:
- Go to the link by clicking here.
- Scroll down to bottom of page, here you will see Install button for upgrading IDM to it's latest version.
- Click on it, it will install the latest version of IDM Add-on.
- Restart Firefox after installing & you have done.