did you try repartition with odin? that should erase the internal memory from anything before(if you get stuck with the "DO NOT TURN OFF DEVICE!!" message, wait 5 minutes and unplug, reboot, see the new warning image and then go and flash your favorite ROM, this time make sure to flash the correct one)
Also I advice you to grab one of those Official ROM justin case and flash one of them, they come with a good kernel and everything works nice.
SE Z310 -> MT t191->BB 8820 -> HTC Touch Pro -> BB 8820 ->SE X10i -> SE X10a -> Samsung Galaxy SII-> Nokia Lumia 920
Nokia Lumia 920 Black
Samsung Galaxy Tab 8.9 ICS