Though I have been busy, I have not forgotten you. I've just added iOS 4.3b2 support. For those of you with Apple Developer accounts, this means you can save your SHSH's for that version and restore to it permanently. Keep me posted of any issues. I'm still working on my next big contribution to the scene... :)
You can download the update at the link below and find instructions on how to save your SHSH Blobs here: (Windows) (Mac).