iSHSHit 1.0.7 (TinyUmbrella alternative) has been updated to support saving SHSH blobs 4.3.2 iOS firmware.
By saving your SHSH blobs, you will be able to downgrade from upcoming iOS X.X to iOS 4.3.2. For who don't know, iSHSHit can send your saved SHSH blobs via email. If you are looking for an alternative to TinyUmbrella then iSHSHit is for you.
iSHSHit uses the Cydia on File service, so that your SHSH blobs will be saved on the Cydia servers.
iSHSHit is available in Cydia under the BigBoss repo for free. You will need to have a jailbroken iPhone to install this tweak.