Did you flash the BL file from 3.1? By chanceI've updated the rom to Ui3.1 and all seems good. This will wipe data with the included csc but you can use the home csc from the DUB7 full firmware if you do not want to. I did not include the home csc so that's up to you. I will be trading this phone in soon but should be able to keep this rom updated for a while more. Enjoy
EDIT: Here is a link to the home csc if you do not want to wipe data.
adb shell pm uninstall -k --user 0 com.wssyncmldm