Some Router and Storage GUIs require cached web content to be cleared after a firmware update if there have been major changes in the web interface.
For Firefox especially I find the location isn’t very intuitive, so to remind myself as much as anything else, here are two ways to clear the cached web content in Firefox. These instructions are for the lastest verison of Firefox – 29, but should be very similar for older versions.
If you have a Menu bar, click Tools – Options.
Follow the instructions above to get to the Options dialogue box.
The select the Privacy tab and click clear your recent history.
Click OK to close the Options dialogue box and you cached web content has now been cleared.