i try to root & update my galaxy tab 2 7.0 plus GT-P6200 to Jelly bean frirmware then it was turning pretty well & was installed but then suddendy when I press the reboot , it was totally turn off & it never turn on. I tried to turn it on many times , charge it in the wall socket for a couple of times , doing the tricky stuff but it was useless. What happened ? Does it damage my tab? I'm so disappointed, please help !!!