Jailbroken iPhone 3.1.2 not able to recieve mms

[niceguy167]

MMS seams to work ok for awhile but after I install some apps in cydia to sync my applications I lose the ability to recieve mms messages. I have tried to run mms & teathering 5.6 but that just locks up my phone. Is there any suggestions? thanks again
P.S. I am on AT&T
P.P.S I apparently cannot read this should be moved to problems section

 

[flyingember]

remove the applications you installed that broke MMS.

 

[niceguy167]

Thanks for the quick reply.
However once you sync any one app after you try to remove it it still will not recieve mms. The only way to make it work is to do a full restore back to 3.1.2