I am downloading a 1.8G file. The downloads with firefox either fail (right at the end) or they complete, but when I go to unzip, they fail with a CRC error. If I download the same file with Chrome, it all works fine. If I do a comparison, of the two file, they the same length, however in some bytes are different. I have attached the results of a file compare. The Chrome file (which works) has 4D 44 hex, but the file the firefox has AA 31 This occurs a number of time in the file. It seems, firefox is translating 4D 44 to AA 31 If I use Firefox 42.0 on a windows 7 machine, it works fine.