Thanks in advance for any help you might offer. I have been mining the forums and can't find a solution that helps.
First, when I say I can't send MMS, this ALWAYS means that I can choose a photo or vid and I can hit send. The problem is that it ALWAYS HANGS at about 90% of the send bar. Eventually it will fail.
Here's what I've done. I have a 3GS on AT&T.
1) 3.0 jailbroken
2) Upped to 3.1.2 via iTunes
2a) At this point, I could MMS. Happy Day.

3) J/b using geohot's blackra1n.
4) Installed Stealthbravo's 6.0 ipcc from his thread/guide.
5) Couldn't get it to work.
6) Tried several different iterations of 5.0, 5.5, 5.6, and 6.0. Never could get it to work

7) Backed up all of my important files and dbs.
8) I wiped this SOB clean by going into DFU mode, and restored to factory settings, 3.1.2
9) Upgraded the carrier settings, too.
10) At this point, I couldn't send MMS. A long AT&T senior tech had my reboot, reset network settings and restore.
11) Still no FSCKIN' joy.
12) I then j/b again with blackra1n.
13) I install Cydia and Rock, and installed and bought MyWi.
14) Reset my network settings.
and that's where I am.
Right now, from my daughter's phone (Xenon also on AT&T), I get a text and a blue arrow in a circle, which I guess is supposed to be the pix.
My only problem is MMS. Everything else works. I just got my first one today, from a friend's phone. I was on 3G at the time, it was a REAL surprise. It's the only one I've gotten since step 13.
I can't get one from my wife's iphone or my daughter's xenon phone. I can't get one from AT&T phones or Verizon.
Right now I'm on 3.1.2, j/b. Carrier is AT&T 5.6. I cannot see my network settings at this time.
Can ANYBODY help? Stealth? PLEASE?????

There is a PAYPAL payment for the right answer.
OneRing2Rule