[UPDATE2]TinyUmbrella 4.21.05 released with 4.3b2 beta support.

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... :)
EDIT: Ok so I had a FEW bugs. 4.21.05 should work peachy :)
Download Link´s Below

---