Did some further work on the firmware editor...
Now, the number fields are locked to 2 characters in size. Rather simple
Not to mention, Drag N' Drop works now too for file handling :)
The file input box only accepts filenames with the *.bin extension, so that you don't load the wrong type. Also, there will be bytechecks post release to see whether a file is a real NDS firmware or not. I might need some people to help test it though, and I might need some testers to see if things work alright when release time comes. Which I am hoping to be extremely soon, as I know plenty of people are awaiting this, and I don't want to dissapoint.