I'm trying to get a 1.1.3 firmware and baseband so I can try the new unlock.
So I did:
update to 1.1.3 via itunes
downgrade to 1.1.1
JB and activate 1.1.1
update (no restore) to 1.1.2
and then I get itunes error. (1015)
This is very strange. I did it 3 times (I had to restore to 1.1.1, JB, oktoprep and upgrade to 1.1.2)
Same error every time.