I took a look around, obviously I don't know if there is a definitive answer. I saw you mentioned the 1.0.2B03 software, I'm assuming you found that at »wwwen.zte.com.cn/endata/mobile/Canada/
, selecting MF668 (Rogers) and downloading the 1-click upgrade tool?
I did some searching and ended up ZTE Denmark site - »wwwen.zte.com.cn/endata/mobile/Denmark/
- The interesting thing is they have 2 models listed - the MF668 and the MF668A - I wonder what the difference is between the two and whether it is the reason why 3G is not working with Rogers / NA market.
You could download the MF668A firmware and give that a shot. I bet the reason why the firmware upgrade didn't work is that the MF668 and MF668A are two different models. Note: I noticed the MF668A firmware tool was compressed with 7-zip, so you will probably need to download a copy of that (it's free).