As subsequent updates slowed the device and altered the user interface, a segment of the user base sought to revert their devices to iOS 6. However, the transition from the A4 chip (iPod Touch 4) to the A5 chip (iPod Touch 5) introduced significant security hurdles that made traditional restoration impossible.
This is the recommended path for most users as it does not require previously saved "blobs". downgrade ipod touch 5 to ios 6
You cannot restore a stock IPSW. You must create a custom IPSW that includes your saved SHSH blob. As subsequent updates slowed the device and altered
Downgrading an iPod touch 5 Go to product viewer dialog for this item. downgrade ipod touch 5 to ios 6