Comment 1 for bug 657322

I removed the custom kernel option because it was cluttering the interface, and it didn't seem like many people were using it. If you really need it, try 471 or an older version from http://sourceforge.net/projects/unetbootin/files/

However, because the ISO option can use anything that 7-zip can extract (including zip files), it may just work if you supply the zip file itself to the ISO option.