I have a quick question about jb'ing my ip4. I have tinyumbrella, and have been saving my shsh blobs to my computer for the past couple updated. Right now, I'm running 4.2.1 (bb 03.10.01). I know that you can only save shsh blobs while apple is still 'signing' them, so does that mean that I cannot save shsh blobs (for say, 4.3) until I have installed that iOS on my phone? Is there a way to have saved shsh blobs even though I haven't upgraded? Thanks for your help!