Some clever hackers in the Rockbox community wrote up a tool to access the Meizu players’ DFU mode (while running Linux – which I already mentioned), and using this we can upload and run code on several Meizu targets. The code is put and executed in SDRAM only. It makes it a perfect way to test new code on it.

The Meizu players have their SoC in common with Apple’s Nano 2nd gen and Shuffle 2nd gen.

There are indications that the Nanos have such a DFU mode as well, even though we don’t currently know of any way to trigger it by will. Possibly shorting the NAND chip or destroying the firmware or similar might do it.

If you have such a broken Nano or Shuffle, please get in touch and we can do some poking around!

Obviously, there’s a DFU mode on the iphone and iPod touch that can be triggered:

“Your phone must be off, but attached via USB to the PC. Then you hold the power and “home” buttons for 10 seconds. At the ten second mark, you release the power button, but keep the “home” button pressed for another 10 seconds. At the end of that process, the phone enters DFU mode (the only way to tell is windows will tell you a USB DFU device has connected)” (thanks to GodEater)

Although I’m convinced our limited DFU experiments will not be a lot of fun on those devices (yet).

It seems iPod Classics can also go into this mode.

For the iPod Nano 2nd gen:

“To access DFU mode, reset the iPod with MENU+SELECT, then press and hold BACK+PLAY. A picture of the dock connector should appear with the Apple support URL; according to lsusb, this is DFU mode…  it seems that you have to first trash the firmware before you can access it.” (thanks to LambdaCalculus37)

Since autumn 2009, Rockbox boots and runs on the iPod Nano 2nd generation!