alright i just saved my 4.2.1 blobs and tried on 4.3 then plugged it back into tiny umbrella to save the 4.3 blobs and downgrade back... i hit save shsh it wouldnt save the 4.3 but it save the 4.1 blobs which is a firmware i have never been on.... this is an iphone 3gs... can some one explain what going on?