hi refer to

• Install an older version of Firefox

are you having a problem with firefox 22?

When you install Firefox 20 or later, your old downloads list is migrated to your Library along with history. If you press Ctrl+j the Library dialog should open to the Downloads list.

The right-click menu has "Copy Download Link" but it is immediately followed by the very dangerous "Clear Downloads" so if you are the slightest bit imprecise with the mouse, well, it could get ugly. Safer to right-click then press the letter L to copy the link.

Does that work?

Firefox manages downloads in the Downloads folder in the Library (History > Show All History)

• Downloads are treated as history items: clearing history removes included download items and vice verse.
• When downloads are in progress you see an animated download button on the Navigation Toolbar showing an estimate of the remaining time
• The Download button gets a green highlight once all download are finished to make you aware that new downloads are available.
• Pause and Resume can be found in the right-click context menu of an item.

You can display the new Download Manager in a tab by opening the about:downloads page and consider to open this page in a separate window.

You can set the Boolean pref browser.download.useToolkitUI to true on the about:config page to revert to the classic Download Manager and also make all download settings reappear in "Options > General".