No, I think you misunderstood, TU will not save your blobs for 4.3.3 for this new device. But iFaith will. You may want to look into virtualising Windows on your Mac so that you can use iFaith. It extracts your blobs from the installed operating system (4.3.3 in your case). iFaith is the ONLY tool that can do this.
Hope that clarifies.