Changing 2 bytes in a 16GB file - Hex editor or other recommendation needed [closed]

I'm looking to change 2 bytes in the header of a 16GB file on windows 7.

I'm looking for a freeware solution to do this task once.

I have tried a few hex editors from the superuser hex editor as well as the wikipedia list of hex editors.

Can anyone recommend a hex editor or similar program that allows to change single bytes on very large files?

2 Answers

Ultraedit allows you to edit huge files directly (without having to load them). It has built-in hex editor.

Be careful or make a copy of file when using direct editing, since there are no backups.

Program is not freeware but for a one time procedure you can use trial version, which you can uninstall later.

I prefer tiny hexer. I also use HexEdit because it has a 64-bit version