because apple does not update ipod touch 2g to 4.3 ios just do not understand your ipod apple leaves obsolete or just actualizen 2g ipod to ios 4.3
iPod touch, iOS 4.2
Posted on Aug 3, 2012 1:39 PM
Q: Ipod Touch 2g
The 2G iPod can only go to iOS 4.2.1. The hardware does not support a higher version. The 2G has half the memory, a slower processor and poor graphics processor that the 3G and 4G.
