I just bought myself a itouch 3g 64 gb and I am planning to upgrade my itouch 3g 64gb to 4.1, then using limera1n. My question is will I loss all my apps, game data, eBooks etc from my jb 4.0? I see in the procedure that I will have to go into DFU more which basically erase my itouch? Is this, if yes please send your suggestions.