What is NOR?

Discussion in 'iPod touch 2G Jailbreak: redsn0w, 24kpwn, etc.' started by buzzaugust, Mar 16, 2009.

  1. buzzaugust

    buzzaugust New Member

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    Hello

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    Im new to this forum so im sorry if this is in the wrong section.

    Anyways, im strougling around with the question: what is NOR? I know you patch things there when you JB. But what does it mean if a JB tool is NOR only? Also, is QuickFreedom NOR only?

    Thanks in advance, August
  2. crizh4x

    crizh4x Active Member

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    The NOR is a small allocation of memory stored in a logical partition (very small, like 8MB) on the FTL that holds Apple's ImageList for the iPhone, which includes most of the boot environment.

    That is, if I read the wiki correctly a few months ago.
  3. unknown1337

    unknown1337 Member

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    I think its the system that contains the files that allows you to boot. You can really mess up your iPod if your toying with it.

    UPDATE: What he said^
  4. jfb392

    jfb392 New Member

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    Eh, not so much.
    You can do a lot to it and manage to get it back, but I wouldn't take any chances.

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    It's actually not even a partition, it's a different chip (you have a NAND and NOR, and it's also ~1MB).
    It stores a bunch of configuration information about your device (serial number, environmental variables, etc.) and critical system images such as iBoot.
  5. crizh4x

    crizh4x Active Member

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    right... where is it physically though? I thought it was just a logical allocation on the NAND.
  6. posixninja

    posixninja New Member

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  7. buzzaugust

    buzzaugust New Member

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    Thank you for your replies

    Is all the untethered jb's NOR/NOR-only?
  8. jfb392

    jfb392 New Member

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    It's just a completely different chip from the NAND; I believe it's on the side of the board, whereas the NAND is kind of in the middle.
    That's kind of useless information though.

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    QuickFreedom may do a NOR-only restore, and I know redTool does, but all untethered jailbreaks are not NOR-only.
    You can still create a full IPSW to restore to (that wipes your file system and everything) if you wish to do so.
  9. InsertiPodHere

    InsertiPodHere New Member

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    Well, quickfreedom is not nor only since it wipes everything on your iPod and restores the thing like it's new.

    RedTool is Nor only, and the only people that needs a Nor only jailbreak are those whom already have a tethered jailbreak and need to go untethered without losing their apps and music and have to resync.

    Edit: I checked the advanced options for quickfreedom unless repatch firmware means nor only, I really doubt that it can do Nor only, but I could be wrong...
  10. posixninja

    posixninja New Member

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    actually, he might be right. very few manufacturers create 1MB NOR anymore, it very well could be just a partition of the NAND chip.

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