my iPad2 crashed and could not restart again

[dannai2007]

Hi,

Please help me with my iPad2 (OS 5.01 jailbroken). Firstly, i admit that it was my fault. I install some program on my iPad2 while it is getting music through iTunes. And, the program on iPad2 was finished installed and suddenly restarted. Thereafter, the apple Logo appears for some seconds and the cycle spinning appears for ever. I tried to restarted the device by using home button and power. But, nothing happen, but cycle spinning on the black screen of iPad. Please suggest me what should I do.

Thanks a lot,
Danai