Diagnostics 5-in-1

The 5-in-1 option in Monochrome diagnostics runs several tests in a row on non-iOS iPod models: LCM, RTC, SDRAM, FLASH/CHECKSUM, and FIREWIRE/FW ID.

But the real cool stuff comes after the tests finish. On an iPod 3G, you can press buttons to make noises come out of the built-in speaker. Press Previous to hear the wheel's clicking sound, Menu and Select to get two different long beeps, and Next for an effect that sounds a little like a Star Wars blaster. You can have a lot of fun walking around with your iPod, pressing buttons and staring intently at the screen as if you were doing something serious. The clicking sound makes a great fake radiation detector. Press Play to return to the Diagnostics menu.