Can I get old SHSH Blobs for iOS 6.1.0 from an iPhone running that version?

I have an iPhone 5 running iOS 6.1 and would like to save the SHSH Blobs so I can restore to that version if a planned jailbreak fails. Is it possible?
Or any other way for me to restore it to how it is now, like just saving the whole SSD (or whatever is used) and re-loading that on, without iTunes. I just want to be able to undo the jailbreak into a still jailbreak-able form if it fails. Thank you for any help.

Added (1). Also. I've tried TinyUmbrella but it only saves the blobs for 6.1.4. I want to get them for 6.1 from a device running that.

Hey man it sounds impossible i suggest that wait for ios 7 and his jailbreak for less than a month

Search for "tinyumbrella" this programme will save shsh blobs and verify them too