Best Firmeware to install jDownloader 2 @

Hi I have tried your firemware ubuntu-mate-16.04.2-desktop-armhf-raspberry-pi.img but after I was finised and made all updates I got a firefox crash. Then I fixed it via the link https://launchpad.net/~jd-team/+archive/ubuntu/jdownloader and today my raspi 2 doesn’t start any mor, no led light in fromt od the lan is blinking or lightning.

So I want a good system where I may install my jDownloader 2 as easy as gone!