create 4.3.5 shsh based on 6.1.3 shsh ?

[bezandros]

I saved my shsh for ios 6.1.3 an now i have ios 8.2 . i want to downgrade to 6.1.3 but the redsn0w needs both 4.3.5 shsh and 6.1.3 shsh for downgrading to 6.1.3

is there any way of "generating" the shsh 4.3.5 based on the 6.1.3 shsh ?

is my question stupid?

 

[J. A.102]

There's no stupid question.

Apple made it impossible to downgrade, even though you saved your shsh blobs. It's only possible to stay with the currently installed software version, or update to the one currently signed by Apple, which is 8.3.
Sorry!

See this thread for more information:
Can I Downgrade Re-restore my iPhone X XS iOS from X.X.X to Y.Y.Y Apple iPhone Forum

 

[scifan57102]

Earlier iPhones could be downgraded using shsh blobs but any device capable of running iOS 8.2 is too new for that. In addition, blobs are unique to a particular device and can only be saved when the iOS version is still being signed by Apple.