K4 jailbreak + fbreader

Hi all.

There are tutorials showing how you run fbreader/fbkindle on kindle 3 by jailbreaking it. But I've got kindle 4 (nt) so I was wondering whether fbreader could run on K4 as well.

The only reason I'm unhappy with kindle's software is its inability to hyphenate. Plus, books converted using kindle previewer show fully justified text with too many white spaces between words, too many times. A turnoff.

Thanks.