Just got back from the post office to mail back my defective ZT-180 it cost me 40.00 to send it off. The Touch screen is defective it is showing multiple touch when I click on the screen and the tablet crashed when I try to play music from the SD card slot or the USB slot. When I try to play music from the USB or the SD card slot I get The application Music (process com.android.music) has stopped unexpectedly. Please try again. Force Close option shows up also I click unmount SD card and I get the Process android.process.media has stopped unepectedly please try again errors I flashed to the old firmware and back to the new firmware and it still gave me the errors so I sent it back.