How to Manually Create Custom SHSH Blobs According to ECID

I've been searching on the internet for this how i can create a manual file of SHSH Blobs using my ECID or how can I edit these files to change values. All the exploiters told me that, for the moment, you cannot manually create SHSH blobs, they have to come from apple when they are signing a firmware.
The alternative for the question Manually create SHSH's is that simply just save them using TinyUmbrella/redsn0w or dump them using iFaith. Note that you can't use SHSH's from another device on another device. SHSH's are unique to each device because of this crazy ECID.
We're waiting for the hackers to create on Cydia server all the blobs we need to install unlocking iOS versions.