For end-user, nope. But if you got some RE background, combining the 4.0x webkit exploit and the kexploit you would be able to do things that used to be exclusively for 1.76.
A "nope", that I understand! The rest of your post, I have no idea. My skill level basically is: Downloading stuff to an SD card, shoving it into a Wii, you've successfully hacked a console.