Rogers/Sony K790a CAll-Name Display issue

Hey everyone, Sorry for another new thread already, but I have another Issue.
I Have a K790a purchased from rogers, and thanks to philzfog I have it flashed successfully.
An old issue remains however. When people call me, ONLY their number shows up (unless they are in my contact list). I called rogers and verified that I have that feature, they did a conplete reset of my phone, took those features off, and re-added them. I even had an extra SIM card that i switched to. Still no luck!
I have read that certain firmware has caused an issue with this. Can anyone inform me of a specific firmware that they use that supports this feature?
Or any other ideas.
ANYTHING is appreciated :)

Problem solved, I did some more research on the internet and used "america 1" firmware, as opposed to america 2.
Apparently this fix has worked for others as well.
Cheers!