Recently, I installed Cyanogenmod 11 for my Xperia J but this ROM didn't work great for me as SIM and Camera are the most essentials of the phone and they were not working.
So I decided to revert to my stock android firmware. I downloaded the firmware and flashed it by using Xperia flash tool.
But now (after successful flashing) when I press the power button, a red light on the phone flashes 3 to 4 times and then it goes off and nothing comes up on the screen. And when I put my phone on charging, it just turns up the green light which is known for flashmode.
Please help. I couldn't find the thread related to mine so I posted the new thread. And sorry for my English.