Hi to all, I have a 2g ipod touch (MB model) which is running on ios 3.0 I want to upgrade it to 3.1.3. I am searching internet for 2 days however all the things I found is downgrading from 4.0 to 3.1.3. I tried to upgrade in regular way, in DFU mode, in recovery mode but they all were not success. I am always getting the error regarding "this device isn't eligible for the requested build" I tried several versions of itunes still no success. They say you don't need those cydia TSS things as you have an 2g MB model for downgrading from 4.0 to 3.1.3. But it did not worked for me to upgrade from 3.0 to 3.1.3. So, am I doing something wrong? Is there a way to upgrade it to 3.1.3? To upgrade it to 4.0 and downgrade it 3.1.3 is the only way? Thanks.