How to download softwares for ipod touch in minutes?

i hv an apple ipod touch4 but wen new ios softwares r available 2 download ,it takes me 6 to 7hrs to download it but sum mishaps hapen before d download finishes like d netwurk conection times out or d internet device gets disconected!so can sum1 plz tell an easy way 2 download d software in minutes