Unable to find Showtime 3.2 (latest release as of this post) signed for 3.41, I went through the huge pain in the ass of figuring out how to do it myself. It works great on my Waninkoko firmware. Here's the link: http://www.megaupload.com/?d=6P2NPCPF
Haha... Thanks! I was sure somebody would say something about that!
I forget why I chose that firmware. I feel like there was a reason... But, I haven't had a good reason to change/update. It does what I need it to (plays backups and weird movie formats like .mkv with showtime.) I thought about changing FWs yesterday, but I can't justify the hassle.