so i jailbroke my ipod touch 4g with i think green pois0n and i was installing an app from cydia wen all of a sudden it goes to the apple/skull logo then wen it went to my home screen it said it was in safe mode but i didnt know wat to do,i just decided to restore my ipod but first i pressed the sleep and home button and it went to the apple logo agian but this time it wont go back to my home scrren,and it doesnt show up on my computer when i plug it in,wat should i do?