Updating an iPod Touch to DFU Mode. Putting your iPod Touch into its Device Firmware Upgrade mode bypasses the currently installed operating system, allowing you to upgrade, restore or downgrade ...

While in DFU mode, you can perform a factory data reset, also known as a master reset, to delete all files stored in the device's memory and restore original software and settings.

Following James Whelton’s discovery of the possibility to bypass the iPod Nano 6G cache comparison to install blank spaces on the device and remove apps from its Springboard, well-known developer ...