Odd. Thats Interesting though. I'll be on IRC later to discuss this more. BTW - Im sure we probably can't do anything with these files since they are encrypted? Basically all we get from this is that they must be using the same flash chip for firmware + utilities.
Its an interesting find nevertheless. Taylor On Tue, Mar 10, 2009 at 11:09 AM, The Seven <[email protected]> wrote: > No, 3G doesn't have all these. I guess they didn't want to rely on DFU > in it's first release. > > Taylor Gordon schrieb: > > So does the 3g and 6g have all of these 'partitions' also? It would > > make sense since they added in a dfu. > > > > On 3/10/09, The Seven <[email protected]> wrote: > >> 16158298112 bytes are 15,0486 GiB. > >> So obviously they use some flash space for non-usb-accessible storage, > >> but 1GB sounds too much for the firmware partition. I rather guess that > >> this space is for wear leveling. > >> The initial PC on this platform will be the start of the processor's > >> internal ROM. However, it looks like that one takes over part one of the > >> 2G nano's NOR flash (initializing stuff and loading one of the boot > >> images), and the boot images that were stored on NOR flash were now > >> moved to NAND. This means it should be easily possible to corrupt disk > >> mode, but since iTunes now knows how to talk to a device in DFU mode, > >> that shouldn't be an issue. > >> So this one doesn't have any NOR flash any more? > >> > >> Cory Walker schrieb: > >>> That actually is interesting because the flash is actually 16.1 GB > >>> (16158298112 bytes). Isn't this code that would normally be stored on > >>> the utility flash? Maybe Apple scrapped that idea and just had a larger > >>> flash chip. I'll have to examine the flash chip more, but I am > wondering > >>> how they got a 16.1 GB chip. Don't they normally only come in powers of > >>> two, like only 16 GB? If critical information like this is on the > flash, > >>> wouldn't it also be possible to brick the 4G nano, or does it rely on > >>> DFU to fall back on? > >>> > >>> The Seven wrote: > >>>> Sounds interesting, and somehow makes me suspicious whether that one > has > >>>> a NOR flash at all or whether the whole firmware is stored in NOR. How > >>>> big exactly is the data flash you see via USB? > >>>> > >>>> Cory Walker schrieb: > >>>>> I just extracted the partitions from the 4G Nano firmware file using > >>>>> extract2g, and I stumbled apon some interesting results. It turns out > >>>>> that the 4G has many more partitions than the typical three (osos, > aupd, > >>>>> and rsrc). I found appl, chrg, rsrc, bdhw, diag, bdsw, disk, lbat, > osos, > >>>>> instead. Note that it does not have the aupd partition. Here is what > I > >>>>> think these are for, in order: Apple booting logo, charging, > filesystem, > >>>>> bad hardware error, diagnostic mode, bad software error, disk mode, > low > >>>>> battery, and firmware. I don't know if this has already been > discovered, > >>>>> but I just wanted to point it out. Another thing that might be worth > >>>>> looking at is the hash.fw partition in the 3G Nano and 6G iPod. These > >>>>> are probably not of any use because they are filled with 6KB of FF's. > >>>>> > >>>>> -Cory Walker > >>>>> > >>>>> _______________________________________________ > >>>>> Linux4nano-dev mailing list > >>>>> [email protected] > >>>>> https://mail.gna.org/listinfo/linux4nano-dev > >>>>> http://www.linux4nano.org > >>>>> > >>>> _______________________________________________ > >>>> Linux4nano-dev mailing list > >>>> [email protected] > >>>> https://mail.gna.org/listinfo/linux4nano-dev > >>>> http://www.linux4nano.org > >>>> > >>> _______________________________________________ > >>> Linux4nano-dev mailing list > >>> [email protected] > >>> https://mail.gna.org/listinfo/linux4nano-dev > >>> http://www.linux4nano.org > >>> > >> > >> _______________________________________________ > >> Linux4nano-dev mailing list > >> [email protected] > >> https://mail.gna.org/listinfo/linux4nano-dev > >> http://www.linux4nano.org > >> > > > > _______________________________________________ > > Linux4nano-dev mailing list > > [email protected] > > https://mail.gna.org/listinfo/linux4nano-dev > > http://www.linux4nano.org > > > > > _______________________________________________ > Linux4nano-dev mailing list > [email protected] > https://mail.gna.org/listinfo/linux4nano-dev > http://www.linux4nano.org > _______________________________________________ Linux4nano-dev mailing list [email protected] https://mail.gna.org/listinfo/linux4nano-dev http://www.linux4nano.org
