Firmware

This article is about the firmware itself. If you are trying to get a copy of the firmware files, please see Dumping firmware and Extracting firmware. NOTE: Please excuse the chaotic layout of this article. It is under construction. :-)

osos

This is the main firmware image of the iPod. This part has been encrypted ever since the iPod Nano 2G.

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aupd

Here is a comparison between the different aupd partitions of firmware version in the iPod Nano 2G:

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rsrc

This is the resource filesystem of the iPod firmware. It is unencrypted and of not much use to this project.

Nano 4g

The Nano 4g doesn't have the aupd file. Instead, seven new files were added. We assume that these have the following functions, the question mark means that we are not completely sure:

• appl - bootlogo?
• bdhw - bad hardware?
• bdsw - bad software?
• chrg - sleep, but charging?
• diag - diag mode
• disk - disk mode
• lbat - low battery logo?

Helpful pages

http://home.gna.org/linux4nano/download/crypto_synth-1.0.pdf

http://www.ipodlinux.org/wiki/Firmware