I have also tried downloading IPSW files from a website where I used to get from when I previously worked as tech support and can't seem to download files from them as well, I checked and they use the same download server as Apple does.
I have also tried downloading IPSW files from a website where I used to get from when I previously worked as tech support and can't seem to download files from them as well, I checked and they use the same download server as Apple does.