I have a Samsung Galaxy S4 (SGH-M919N) from Metro PCS. First I rooted it, then I flashed Cyanogenmod. I didn't like Cyanogenmod so I tried to flash it back to the stock rom. The problem is that there is no stock rom out there yet for my phone. So I used the stock rom for the T-Mobile version (SGH-M919). After I flashed it, the Cyanogenmod whirling blue circle came up so I knew something was wrong. It stayed on that circle for about thirty mins then I turned the phone off. Now, even CWM recovery won't come up(just the android laying on its back with a !red triangle above it) and anytime I try turning the phone on, it just goes back to the Cyanogenmod screen and stays there. Somebody please help me!