This is just a quick utility to dump a binary file into a text file of hex bytes.
See the hex2byte utility to re-create the original binary file after you edit the hex text.
See the HexTools utility in GnuWin32 for a more feature-rich version.
This is a command-line tool. If you don't know what this means, this probably isn't the right tool for you.
It just takes binary data on stdin and spits out the hex values on stdout.
For example:
byte2hexmyhex.txt
There are no options.