Earlier today, 4.21.03 and 4.21.04 versions of TinyUmbrella was released to give iOS 4.3 b2 SHSH Blobs saving support. First due to some bugs in it, version 4.21.03 was updated to version 4.21.04. And again in this version, a bug with saving SHSH on the iPad was found. So it has been fixed and TinyUmbrella 4.21.05 has been released.

TinyUmbrella 4.21.05

This is what he said in his blog :

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 TinyUmbrella 4.21.05 from here