I am unable to use my iPad Pro and it is stuck in update from prior iOS version. I understand that you cannot downgrade unless you use Blobs. Can this method be used to downgrade when it is stuck in update mode? Also, if this can be done, are the SHSH blobs unique for the iPad, or unique for the iPad and associated iOS version? that is, can I get the Blobs from TSSSSAVER and use them to downgrade to any iOS version?