trouble finding firmware for mega 19205

Ok, obviously I had changed my screen because with firmware update to 4.4 my phone no longer works because it's not oem screen. There is a possibility of downgrading with computer but I'm having trouble finding the firmware. Was written sammobile has it but link doesn't work and I assume you have to pay for the link to work. Anyone know where to download 4.2 for uk or austrailia somewhere on net for free? I really don't want to get a virus on what looks to be scheme sites.

Ivan.