Hardware

Although iPods have many other components, here we are only listing the components that might be relavent to cracking firmware encryption. If you have any suggestions for any other components to add, just post on the talk page or IRC. Links to datasheets are important if they can be found.

1G Nano

Component	Details
CPU	Portal Player PP5021C-TDF. This is the last Nano that used a PortalPlayer processor. If anybody knows of a datasheet for this, please add a link to it.
RAM	Samsung K4M56163PG - A datasheet for this Mobile SDRAM chip can be found here.
Utility Flash	SST39WF400A. This chip is documented very well as is a similar chip on the 2G Nano.
NAND Flash	This chip is dependent on the iPod model, but all interface in the same way.

2G Nano

Component	Details
CPU	Samsung S5L8701 ARM940T processor. Absolutely no documentation exists for the S5L series, and contacting Samsung doesn't help either. The processor itself is Apple-branded and marked 337S3291 8701.
RAM	Samsung K4M56163PG - here is the datasheet. This is the same chip used in the iPod 1G Nano.
Utility Flash	SST SST39WF800A,stores Disk Mode, Diagnostic Mode and the code to flash this chip. Tof has managed to extract this data and the dump can be obtained by emailing Emmanuel Fleury. All of the contents in the utility flash chip are encrypted from now on.
NAND Flash	This chip is dependent on the iPod model, but all interface in the same way. Common ones for the 2G Nano are the Samsung K9MBG08U5M and the Hynix HY27UW08BGFM.

3G Nano

Component	Details
CPU	Samsung S5L8702 ARM940T processor. The package itself is Apple-branded and marked 337S3473 8702.
RAM	Like the flash chip, the memory also varies. The most popular chip seems to be the K4X561, a 256Mbit (32MByte) Mobile 1.8V DDRAM. Another similar one that is sometimes used is the Qimonda HYE18M169CX75.
Utility Flash	SST25VF080B. Like the other SST chips, this one is also extremely well documented.
NAND Flash	This chip is dependent on the iPod model, but all interface in the same way. A common one for the 3G Nano is the Samsung K9MBG08U5M.

4G Nano

Component	Details
CPU	Samsung S5L8720 ARM940T processor. It is definitely worth knowing that this is the exact same processor used in the iTouch 2G. This could mean that some of the same exploits for that could possibly be used. Here is a very interesting page about the S5L8720 processor.
RAM	Integrated into the processor, similar to the iPod Touch and iPhone lines.
Utility Flash
NAND Flash	This chip is dependent on the iPod model, but all interface in the same way.

Helpful pages

http://theiphonewiki.com/wiki/index.php?title=S5L8720_(Hardware)

http://www.ipodlinux.org/wiki/Generations (Be careful! This is extremely inaccurate.)

1G Nano

http://www2.electronicproducts.com/Apple_iPod_nano-whatsinside-2.aspx

http://arstechnica.com/apple/reviews/2005/09/nano.ars/4

Image of the 1G Nano board

[1] - The pictures listed

2G Nano

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

http://www.ifixit.com/Guide/First-Look/iPod-Nano-2nd-Generation/592/1

http://arstechnica.com/apple/reviews/2006/09/ipod-2g.ars/4

3G Nano

http://www2.electronicproducts.com/Applie_iPod_Nano_(4GB)_3rd_Generation-whatsinside-16.aspx#

http://content.techrepublic.com.com/2346-13636_11-170826-1.html

http://www.ifixit.com/Guide/First-Look/iPod-Nano-3rd-Generation/594/1

http://insidetronics.blogspot.com/2007/09/teardown-ipod-nano-3g.html

Image of 3G Nano board

4G Nano

http://www.ifixit.com/Guide/First-Look/iPod-Nano-4th-Generation/584/1

Other (for comparison)

http://www2.electronicproducts.com/Apple_iPod_Touch-whatsinside-57.aspx

http://www2.electronicproducts.com/Apple_iPhone-whatsinside-4.aspx