iPad can't connect to iTunes/iFun-Box

hi Everyone
I hv a problem last night after i had installed Activator from Cydia in my iPad..
i just knew it when i start to connect my iPad to my laptop to add some app by iFun-Box, but it say there no device attach , same thing happen when i turn on my iTunes, my ipad didn't appear there.

so I remove the app " ACTIVATOR" from cydia..then i reset my iPad by push "Home button+Power"
but it won't change and my iPad still cannot connect to iTunes +iFun-Box too
ANyone can help me..what should i do ?