Hi ,
My iphone 4 which was jail broken and unlocked .
i upgraded to the latest firmware via itunes . now i am stuck
I dont have any shsh blobs saved . what to do now ??
Unfortunately pailometoxo is right. Even if you did have SHSH's save and downgraded your, baseband wouldn't be, so you would still be stuck without an unlock.
You've learned the hard way. I know how you feel, I've been there...