I was just about to post this here but I have tested it and it does work.
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Before doing this make sure you have aLogcat. Also its easier to find your MSL if you go into logcat and "clear log" before doing these steps.
**Refer to the attached pictures if you get lost**
- So step 1 is to go to your dialer and enter ##DATA# or ##3282# which will bring up the EPST menu
- Once the menu pops up just select "View Mode"
- At this point you will see a screen with 3 selections.
- From here either press and hold the Home Key and select aLogcat if you ran it before, go to your tray and run Logcat.
- After opening Logcat it will update, once it finishes press "Menu" and "Pause" the log.
- Then scroll until you see a group of entries labeled "I/EpstBroadcastReciever" which should be green
- Locate the line that has "MSL Code=" at the end of it"