This fix is for the Epic CM9 port, found here:
Here is the thread describing porting the Epic to Virgin Mobile:
Attached to the bottom of this page is an CWM updater.zip for CM9, flash this after every CM9 update you install. If you do a wipe and restore your data flash this fix AFTER you restore your data as the fix deletes the telephony.db file from the data partition, which stores the APN values. This causes your phone to read the apns-conf.xml and write the correct Virgin Mobile values to the telephony.db on the next boot up.
Please report if you have any issues related to MMS or Virgin Mobile stuff. However if they are bugs related to the roms please post in the rom specific thread.
Epic CM9 MMS fix mirror:
Epic CM7 7.2.0 RC2 MMS Fix (Will only work with 7.2.0 RC2:
If this fix helps you please drop me a thanks and if you can spare a few bucks please donate to the Epic CM9 developer fund: http://epiccm.blogspot.com/p/about-epic-cm.html
Also people please stop messaging asking will I fix this rom or that rom for you. No I will not! I only use CM9 and dont care about other roms. If you want MMS working on those roms figure out how to fix it yourself. You might learn something in the process.