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11-17-2007, 12:17 AM
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A question from a noobie: at least in theory, would it be possible to downgrade the bootloader (also if it's a very very very risky operation)?
__________________
AisMen 8 Gb 1.0.2->1.1.1->1.1.2->1.1.3 iPhone (iJailBreak) 100% Tim Italy         
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11-17-2007, 12:30 AM
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I'm desesperate, I need to find a way to sim unlock OTB 1.1.2 (with bl 4.6), whatever way it is... (turbosim is too expensive, i mean, per unit). I'm willing to pay whatever amount for a solution that let me unlock an unlimited numbre of phones.
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11-17-2007, 12:32 AM
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not need to downgrade we need to find the backdoor, someway to wirte the baseband seckpack. dont worry the DEV team is working on that.
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11-17-2007, 03:49 PM
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No, I have not tested nor do I know of anyone that has. I just raised the possibility to see if anyone would care to comment if it would work or not. It it works, a modified version of ierase and bbupdater will be required, as well as the pre-patched versions of the baseband firmware or a offline patcher. At least it's not as complex as the original geohot short, as now the unlock is on the code only and not on the code + seczone.
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11-17-2007, 07:25 PM
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Can I suggest somebody stick this thread as a sticky? Thanks.
Gosh .. is it gonna be hard & require lots of item if the solution will be like open up the iphone and flash the bb directly? Am I talking the same thing as u, aviegas?
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11-17-2007, 10:23 PM
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11-17-2007, 10:26 PM
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In theory, and referring to realo's post, we can have our old phone (3.x bootloader), updated to 1.1.2 (in order to get the latest 4.x Baseband), then downgraded to 1.0.2 or whatever to unlock the phone (w/ 4.x Baseband being hacked), finally upgraded to 1.1.2 to have an unlocked 1.1.2 iPhone? (Latest Baseband bypasses the check, so the hacked baseband still remains)
Am I correct? so NOW, is it possible to have an UNLOCKed iPhone w/ 3.xBootloader/1.1.2/4.xBaseband? *apologize if this post is plain wrong.
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11-17-2007, 10:32 PM
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No my friend, Bootloader will never get updated, or downgrade, Imagine the bootloader as the Last reserve that the iphone has, it is the program that controls everything, like the BIOS on the computer, if you flash the bootloader and something wrong happens then you will have a BRICk, wont even get the ARM core, which is the processor that runs the whole OS...
so dont think a bootloader can be donwgraded or updated that easly, yes it can be Flash , some sectors of it, but you can not erase...
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11-17-2007, 11:34 PM
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On "geohot's short" method, a cleverly engineered short circuit circunvented the control and enabled the write of the baseband even with the wrong signature, that is the case of a patched firmware. The 3.9 bug was another way to achieve the same result, without resorting to a hardware trick. Maybe the trick still work, how knows, but who will write the utility to use it?
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this should be made into a sticky.
Linear Mode
