jailbreaking info?

[BDaniels08]

okay i had the 3gs.. i have blobs for 4.0-4.2.

but i upgraded to the ip4. and when i got it, it already came on 4.2.1...

anyway i can downgrade by using maybe my 3gs blobs or would that not work? (never asked or read this anywhere so i thought id ask now. since the untether JB is pushed back)

[Simon]

SHSH are device specific so they wont work on your i4.

[BDaniels08]

thats what i thought, but i thought id ask. thanks.