I have a Motorola z6m that I bough from the net and it is partiality flashed to cricket, I can talk and send sms messages without a problem, unfortunately the mms service is not working.

I know there are many tutorials in here about this,but I cant find anything specific for this model, and I get lost because of the different menus on different phone models.

Can you help or tell me where to find a good tutorial please??

I don't know if this information is important, but just in case:

I have the following unlimited services on this phone:
-local calls, sms and mms messages-
-no internet and no long distance-
Thank you.