I recently installed Cyanogenmod on my friends International (GT-19195) GS4 Mini. He said it was glitchy and ****, and he couldn't sign into his Google account. I then turned the phone off, went straight into recovery and installed a stock firmware. Being as dumb as I am, I didn't erase any data or anything whatsoever, I just installed the stock firmware. Now it hangs on the Samsung logo, and I can't get into recovery, pressing the buttons just doesn't work. I can however get into download mode. Help!