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Discuss [3GS 3.1 15.11.07] Need some pointers at the Ultrasn0w (3G(S)/iPhone 4 unlock) - Hackint0sh.org; Many of the system files for the 3GS are smaller than the previous versions. This ...
  1. #11
    Super Moderator Array Olethros's Avatar

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    Many of the system files for the 3GS are smaller than the previous versions. This is because the CPU in the 3GS supports a more compact instruction format.

    Cydia has long had the ability to move some non essential files from the system partition to the media partition.

    You can also see how much space is free on both partitions in cydia. Go to manage and select storage. Displays disk usage with nice pie charts.

    I would suggest you accept the defaults for system partition size unless you plan on installing a lot of low level software from Cydia.


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    Thanks for the quick response.

    As I'm not sure what apps would fall into low-level apps category, I assume something like OPENSSH is one such app, then it may be easier for me to not have to deal with this aspect of jailbreaking and just use Blackra1n for now.

    If I was to use Blackra1n, is then possible to go back to original Apple 3.1 FW making the iPhone to what it was?

  3. #13
    Super Moderator Array Olethros's Avatar

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    I was talking about for example setting your iphone up to do more development or hacking tasks. Then you might find you are limited on space on the root partition. Changing the partition size is generally not required for an average iPhone user.

    pwnagetool can be either very easy or very complex and powerful.

    At minimum you need to answer if you can activate your iPhone through iTunes or not. The rest of the options are usually fine at their defaults.

    I feel pwnagetool gives you the ability to create a cleaner jailbreak. Geohots blackrain is still quite rough around the edges, but it will do what you require faster and with less fuss than pwnagetool.

    An example of where blackra1n is rough around the edges is the Icy package it includes which is old and breaks Cydia and RockBox. Also, on some iPhone models (3G I think) you may need to run blackra1n more than once before you can successfully jailbreak.

    Blackra1n was rushed because although geohot is a fantastic and clever hacker who has independently found many important iPhone exploits, he doesn't have time for the polish that the dev team and the chronicdev team put into their work.
    Last edited by Olethros; 10-23-2009 at 10:00 AM. Reason: clarify blackra1n problems

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    Quote Originally Posted by Confucious View Post
    If you are already on BB 05.11.07 then BlackRa1n is quicker and easier.
    it's faster for jailbreak only ... but ... there may be some issues with afc not patched + no hacktivation and the user may run into other quirks. For well versed user, this can be overcome with a few hacks. However, for those not wanting to deal with this, pwnagetool + custom fw is best.

    Blackra1n is a cool tool, fantastic hack but for average users pwnagetool + custom fw is less of a trouble/annoyance.
    Last edited by dtube; 10-23-2009 at 06:47 PM.
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    Thanks a lot Olethros & dtube. You have convinced me to use the pwnagetool to jailbreak my 3GS 3.1 15.11.07 iPhone.

    One final question - Is there any advantages to staying at 3.1 FW or should I upgrade to 3.1.2 before I JB?

    EDIT: ok maybe one more question. I saw the following statement in the pwnagetool 3.1.4 thread

    Note for 3GS users not already jailbroken and stuck at 3.1.x: this version of PwnageTool has a side feature to jailbreak your 3GS. It uses a simple implementation of the usb control msg hole found by chronicdev, geohot, and our very own gray. Now that the hole is public and in use, we expect Apple to close it by the next major firmware update. That’s why 3GS users need to get their ECID hashes for 3.1.x now, and need to stay onboard the “jailbreak train” in all future updates. For more details on what this means, please see our earlier posts or ask in our comments section (moderated by the always helpful @angie and @confucious!).
    What does it mean by "3GS users need to get their ECID hashes for 3.1.x now" and how is that done?
    Last edited by jbloggs; 10-24-2009 at 12:23 AM.


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    Super Moderator Array Olethros's Avatar

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    Default Re: [3GS 3.1 15.11.07] Need some pointers

    Quote Originally Posted by jbloggs
    One final question - Is there any advantages to staying at 3.1 FW or should I upgrade to 3.1.2 before I JB?
    I am still running 3.1 on my 3GS. Have upgraded my 2g to 3.1.2 and it seems fine.
    Plan to upgrade to 3.1.2 on 3GS this weekend but unless you are experiencing the issues that 3.1.2 fixes (fail to wake after sleep, excess battery drain) I would not rush to upgrade.
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    Quote Originally Posted by jbloggs View Post
    What does it mean by "3GS users need to get their ECID hashes for 3.1.x now" and how is that done?
    For every firmware 3.x for the 3GS and iTouch 3rd gen, the firmware is signed by apple server when you restore for your specific device based on the ecid. The signature hash is called ecid/shsh.

    When a new firmware is released, apple will stop signing the old verion and therefore you cannot restore to an older firmware version. By having a ecid/shsh of an older firmware, you can use it to restore even if apple stop signing it.

    If you have cydia, it will ask you if you want it to make your life easier or something like that. Answer yes, and the signature hash for you iphone is created and stored by Cydia on its server.

    You can read about firmware umbrella in the 3GS general section to create one for yourself if you wish.
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    Quote Originally Posted by Olethros View Post
    I am still running 3.1 on my 3GS. Have upgraded my 2g to 3.1.2 and it seems fine.
    Plan to upgrade to 3.1.2 on 3GS this weekend but unless you are experiencing the issues that 3.1.2 fixes (fail to wake after sleep, excess battery drain) I would not rush to upgrade.
    Wow, I was just about to take my phone back to AT&T for these two reasons (fail to wake after sleep, excess battery drain). So I will upgrade to 3.1.2 to hopefully fix this issue. I thought a got a lemon. Thanks for pointing that out.

    Quote Originally Posted by dtube View Post
    For every firmware 3.x for the 3GS and iTouch 3rd gen, the firmware is signed by apple server when you restore for your specific device based on the ecid. The signature hash is called ecid/shsh.

    When a new firmware is released, apple will stop signing the old verion and therefore you cannot restore to an older firmware version. By having a ecid/shsh of an older firmware, you can use it to restore even if apple stop signing it.

    If you have cydia, it will ask you if you want it to make your life easier or something like that. Answer yes, and the signature hash for you iphone is created and stored by Cydia on its server.

    You can read about firmware umbrella in the 3GS general section to create one for yourself if you wish.
    Thanks. So once I have jail broken the phone I will run cydia and carry out this step, you never know when it might come in handy.

    Thanks again Olethros & dtube, you are the best.

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    Default 3gs iphone,

    i just bought a 3gs iphone,i already have a att account with a regular phone. i turn the phone on, and all i get is the emergency call.. so when i put in my sim card,i get the same..what can i do???? Can anyone help?

 

 
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