Hi All,
Just looking for a little feedback. I've got a 3g unlocked on t-mobile running 3.1.3 with 05.12.01. I've been running like this for a while now, but wonder if now is the time to upgrade to a newer IOS version? So my questions are:

1. Should I upgrade or should I stay where I'm at? Right now, everything works good for me except I have problems sending MMS.
2. If I should, which jailbreak/unlock and which IOS version should I go to?

Thanks for any feedback out there.

...Brad