What is a firewireguid?

[funkychunkz]

I was looking through my ipods invisible files, and the sysinfo file. It read:

BoardHwName: iPod M26
pszSerialNumber: YM5460VNTK3
ModelNumStr: PA107
FirewireGuid: 0x000A2700125D7F06 <---
HddFirmwareRev: ADBA40KA
RegionCode: LL(0x0001)
PolicyFlags: 0x00000000
buildID: 0x05108000 (5.1)
visibleBuildID: 0x01108000 (1.1)
boardHwRev: 0x00000000 (0.0 0)
boardHwSwInterfaceRev: 0x000C0005 (0.0.12 5)
bootLoaderImageRev: 0x00000000 (0.0 0)
diskModeImageRev: 0x00000000 (0.0 0)
diagImageRev: 0x00000000 (0.0 0)
osImageRev: 0x00000000 (0.0 0)
iPodFamily: 0x00000000
updaterFamily: 0x00000000

What is this thing? If my nano only charges over firewire (or does it?, I haven't tried) why would it need some sort of indicator key?

 

[iEdd]

Maybe it's just to tell it that a firewire device it plugged in, so supply power to it.

 

[FocusAndEarnIt]

Maybe it's just to tell it that a firewire device it plugged in, so supply power to it.

Or something that tells the iPod's OS how to handle a firewire connection.

Idunno.

 

[iMeowbot]

Ok, well we know the nano doesn't implement FireWire, and it doesn't look much like a "real" iPod FireWire GUID (it's normaly a unique serial number so the OS can kelp keep track of different devices, USB has them too).

What that number on your nano does look a lot like, is an Apple Ethernet hardware address.

Just for grins, try going into your Mac's Network preferences, double click on Built-in Ethernet (or whatever your primary net connection is called), then click on the Ethernet tab. Is it the same as the Ethernet ID shown there? (The 7F06 would be "extra" stuff added somewhere, if that's where the number came from.)

 

[funkychunkz]

Is it that this generation of iPods simply cannot transfer VIA FW because of the physical limitations. If by means of a hack I could make the ipod accept FW (physically) I could change this reaction number to that of an older iPods number, and potentially load data onto by means of FW? I know that itunes might not recognize it (because model number and stuff don't match), but could this be possible, or are there other factors, such as firmware to deal with.

 

[iMeowbot]

Is it that this generation of iPods simply cannot transfer VIA FW because of the physical limitations.

Yes, Apple took the necessary chips out of new iPod models. The power leads are still there for charging, but none of the communication functions are present.

I'd take a guess that the nano only has that field in its configuration so that software talking to an iPod doesn't get confused by its absence.