MMS problem...

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Last night I have succesfully rooted then updated my Hero to Android 2.1. r1.8. As it was my first attempt to hack Hero, i'm knew to all this adb stuff.
I cannot send nor receive MMS and under Message aplication settings - connection settings I have greyed some mms.emome.net APN... i tried to search via adb shell grep... but didn't found anything. Browsing through shell I have found though mccmnc.xml file where there was emome.net net mentioned, remove it, but under message settings there is still that APN...
Anyone know where is that conf file for that?
Later...
I found those two files and deleted them....
/data/data/com.android.mms/shared_prefs/_has_set_default_values.xml
/data/data/com.android.mms/shared_prefs/com.android.mms_preferences.xml
android created two new one with no values but messages settings are still intact, then I have changed _has_set_default_values.xml to false and now I have the same files as in the begining..
Now, I'm running grep on all the system... whatever comes first...

Thanks.