File Fixer utility helps to recover files, which were damaged on transmission. It works this way:.I've got damaged file. It's size - 100 Mb. I was getting this file by modem for a week. We don't want to send it again. I launch program on my side and it creates file

with CRCs. Size of this file is small. I'm sending it to my friend. Friend starts another program at his side using this file. Program checks file and CRCs and creates file with damaged parts. My friend sends this new file to me (size of this file depends on number of damages). Using this file I rebuild the whole 100 Mb.