Cant update to Firefox 39.0.03

Legacy Netrunner 14.x
1

I’m still stuck on Firefox 37.01 and I need to update to version 39.0.03. I tried entering

[code]sudo apt-get update

sudo apt-get install firefox-plasma[/code]

but no luck please help. :huh: :@

2

Please see this thread: http://forums.netrunner.com/showthread.php?tid=17852