Dear dudes

I always thought updating my 1.1.2 OTB iPhone to 1.1.3 via iTunes would make it equal to an 1.1.3 OTB iPhone. Is that correct?

When an 1.1.1 OTB or lower (with BL 3.9) updates via iTunes to 1.1.3, will the BL be untouched or updated to 4.6?

And last: An unlocked 1.1.2 OTB iPhone (via Gehots new s/w unlock) updated via iTunes to 1.1.3, will stay unlocked? They would have same BL just new BB...

Thanks a lot