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Discuss [BL3.9/BL4.6] Downgrade to 3.9 now, and software upgrade later ! at the iPhone "2G" (Rev. 1) - Hackint0sh.org; Originally Posted by donky but isnt it better performance to stick to apple bootloader? I ...
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    Quote Originally Posted by donky View Post
    but isnt it better performance to stick to apple bootloader?
    I Think its better to stick to apple bootloader as well. With the new update,Apple could easliy brick your iphone irreversibly, where asthey will not do the same for their official bootloader.


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    yeah thats my point

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    Quote Originally Posted by romenator View Post
    I Think its better to stick to apple bootloader as well. With the new update,Apple could easliy brick your iphone irreversibly, where asthey will not do the same for their official bootloader.
    One thing is always overlooked by everyone.
    Apple has data about every sold iPhone. Serialnumber and shipped BL and Firmware version.
    As Firmwareversions may vary du to restore/updates. The serial number and BL version would stay the same (according to the past and current update policy of Apple)
    So downgrading your BL to 3.9 would give Apple the ideal identification to tell whether your iphone is hacked or not. As with the current downgrade method and used BL3.9 version you will be stucked at this 3.9 without the option to reverse the downgrade.

    So in therory Apple could identify by comparing the serial number and BL version with their manufacturing date your iphone and render it useless/bricked if they want. In addition without the possibility to upgrade from 3.9BL you won't be able to totally virginize your iPhone in case you need so send it in for warranty/service.

    So what speaks for the modified (and upgradable) BL3.9?
    • Reverse/change BL at any time if needed


    I want to give you an example:
    The Xbox 360 DVD Drive firmware was hacked years ago to be able to boot backups on DVD-R DL. As it was known that M$ is able to track changes to firmwares they have made serveral tweaks to disguise the modified firmware.

    The same thing could happen to the iPhone. But if you are locked on your BL and it is not the BL your iphone was shipped you are in serious trouble. Only way to reverse it would be to testpoint your phone and i'm sure there are only very few who would dare opening up their iphone and do this.

    This is the main reason why i'm still sticking to my turbosim solution. Downgrading the BL with ziphone could turn out to have been a bit overhasty.

    With this new 3.9BL that is upgrdable you would be save if Apple does anything. If they require to have to correct BL your iphone was shipped with, no problem you would be able to reflash it or reflash a fake original BL to trick the update.
    Last edited by DaSonix; 03-04-2008 at 11:30 AM.

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    Quote Originally Posted by Vigilantes View Post
    Quoting Aviegas said in another thread.

    "I knew this was bound to happen when I saw 2.5: people complaining and the source would vanish.....

    For what it's worth, I'm just finishing a hacked version of ziphone 2.4 with a totally new ramdisk that does not include the downgrade, but will unlock both 3.9 and 3.6 phones.

    No GUI, no extras. Just do the job + much more, like adding BSD, OpenSSH, etc. Any user defined payload.

    Stay tuned!"

    I hope and pray he could also include an option to downgraded using this fakeblank 3.9 BL... his version will certainly standout that the current Ziphone program.
    I'm including the new downgrade as soon as I fix a minor bug. It will support both Windows and MacOSX.

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    Quote Originally Posted by DaSonix View Post
    One thing is always overlooked by everyone.
    Apple has data about every sold iPhone. Serialnumber and shipped BL and Firmware version.
    As Firmwareversions may vary du to restore/updates. The serial number and BL version would stay the same (according to the past and current update policy of Apple)
    So downgrading your BL to 3.9 would give Apple the ideal identification to tell whether your iphone is hacked or not. As with the current downgrade method and used BL3.9 version you will be stucked at this 3.9 without the option to reverse the downgrade.

    So in therory Apple could identify by comparing the serial number and BL version with their manufacturing date your iphone and render it useless/bricked if they want. In addition without the possibility to upgrade from 3.9BL you won't be able to totally virginize your iPhone in case you need so send it in for warranty/service.

    So what speaks for the modified (and upgradable) BL3.9?
    • Reverse/change BL at any time if needed


    I want to give you an example:
    The Xbox 360 DVD Drive firmware was hacked years ago to be able to boot backups on DVD-R DL. As it was known that M$ is able to track changes to firmwares they have made serveral tweaks to disguise the modified firmware.

    The same thing could happen to the iPhone. But if you are locked on your BL and it is not the BL your iphone was shipped you are in serious trouble. Only way to reverse it would be to testpoint your phone and i'm sure there are only very few who would dare opening up their iphone and do this.

    This is the main reason why i'm still sticking to my turbosim solution. Downgrading the BL with ziphone could turn out to have been a bit overhasty.

    With this new 3.9BL that is upgrdable you would be save if Apple does anything. If they require to have to correct BL your iphone was shipped with, no problem you would be able to reflash it or reflash a fake original BL to trick the update.
    You got a good point. But if you dont update they cant do shit


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    Quote Originally Posted by donky View Post
    You got a good point. But if you dont update they cant do shit
    As we've seen in the past people tend to upgrade their iphone for minor improvements, without considering the downsides (e.g. google locate to work out of the box without running locate me).
    I already see (in my imagination) the hundreds of complaints of people that are not able to use a future new feature in a new firmware because they are stuck at 3.9 and apple locked out mismatching iphones

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    Quote Originally Posted by DaSonix View Post
    As we've seen in the past people tend to upgrade their iphone for minor improvements, without considering the downsides (e.g. google locate to work out of the box without running locate me).
    I already see (in my imagination) the hundreds of complaints of people that are not able to use a future new feature in a new firmware because they are stuck at 3.9 and apple locked out mismatching iphones
    Yeah i guess your right, but for me its a win win thing my dad has a 4.6 unlocked iphones mine is 3.9 downgraded via ziphone so i can just swap because he just uses it for phone sake.

    But yeah i get what you mean.

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    Great.
    So now we just need to sit and wait for Zibri or someone else to release Ziphone with this new bootloader.
    Then I will also up/downgrade and dump my TurboSim

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    Quote Originally Posted by DaSonix View Post
    I already see (in my imagination) the hundreds of complaints of people that are not able to use a future new feature in a new firmware because they are stuck at 3.9 and apple locked out mismatching iphones
    With the 3.9FakeBlank that issue wouldn't occur, would it? The firmware most probably can't distinguish it from a genuine 3.9 (and Apple wouldn't lock out the majority of legitimate iPhone owners from an update). And even if it can see that you have a modified 3.9, you still have the option of upgrading back to a fully legitimate 4.6 and everything will work...
    iPhone 3GS / 3.1.2 JB (PwnageTool) / 04.26.08 carrier-locked, Carrier Logo Fixer / Cydia / 1000 posts on Hackint0sh

    Installing Cydia programs on a phone that has no internet connection: read this.

    Editing binary .plist, .strings, .nib and .xib files:
    * on your computer: Windows tool / conversion website.
    * on your iPhone: convert those files in a terminal with plutil (installed with Erica Utilities) or edit them with iFile (Cydia links).

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    Quote Originally Posted by Jim Danner View Post
    With the 3.9FakeBlank that issue wouldn't occur, would it? The firmware most probably can't distinguish it from a genuine 3.9 (and Apple wouldn't lock out the majority of legitimate iPhone owners from an update). And even if it can see that you have a modified 3.9, you still have the option of upgrading back to a fully legitimate 4.6 and everything will work...
    You are right on the most of the points.
    But even with the slightly modified BL Apple would most likley be able to detect it e.g. by compaing the checksum of the BL. But on the other hand If they will do this there will be a counter attack by the iPhone hackers to fake the checksum (just like they did with the xbox 360 firmware.
    Geohot mentioned already that he is working on custom 4.6 BL I think it would be just a matter of a few days to intregrate stealth mechanisms to it.

    The most important thing is, with this new 3.9BLFakeBlank you WILL be able to reflash a new baseband with ease. So you'll only need to wait for a stealth/hacked BL if this happens. All others will still be locked at the original 3.9 and need to open up their iphone to testpoint it.
    We need to remember that currently there is no way to software upgrade an original 3.9BL or the 3.9BL previously used in Ziphone!


 

 

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